<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2022 Workiva-->
<!--r:7672b0ed-3503-4562-bc82-7a3368936983,g:725d4d73-5fd8-4cb1-b65a-aa245208ce29-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:bhc="http://www.bauschhealth.com/20220930" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.bauschhealth.com/20220930">
  <xs:import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2022" schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/stpr/2022" schemaLocation="https://xbrl.sec.gov/stpr/2022/stpr-2022.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bhc-20220930_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bhc-20220930_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bhc-20220930_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bhc-20220930_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="DocumentandEntityInformation" roleURI="http://www.bauschhealth.com/role/DocumentandEntityInformation">
        <link:definition>0000001 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETS" roleURI="http://www.bauschhealth.com/role/CONSOLIDATEDBALANCESHEETS">
        <link:definition>0000002 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://www.bauschhealth.com/role/CONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>0000003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFOPERATIONS" roleURI="http://www.bauschhealth.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS">
        <link:definition>0000004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSS" roleURI="http://www.bauschhealth.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSS">
        <link:definition>0000005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITYDEFICIT" roleURI="http://www.bauschhealth.com/role/CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITYDEFICIT">
        <link:definition>0000006 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://www.bauschhealth.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>0000007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DESCRIPTIONOFBUSINESS" roleURI="http://www.bauschhealth.com/role/DESCRIPTIONOFBUSINESS">
        <link:definition>0000008 - Disclosure - DESCRIPTION OF BUSINESS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIES" roleURI="http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIES">
        <link:definition>0000009 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUERECOGNITION" roleURI="http://www.bauschhealth.com/role/REVENUERECOGNITION">
        <link:definition>0000010 - Disclosure - REVENUE RECOGNITION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LICENSINGAGREEMENTSANDDIVESTITURE" roleURI="http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDDIVESTITURE">
        <link:definition>0000011 - Disclosure - LICENSING AGREEMENTS AND DIVESTITURE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGINTEGRATIONSEPARATIONANDIPOCOSTS" roleURI="http://www.bauschhealth.com/role/RESTRUCTURINGINTEGRATIONSEPARATIONANDIPOCOSTS">
        <link:definition>0000012 - Disclosure - RESTRUCTURING, INTEGRATION, SEPARATION AND IPO COSTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTS" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTS">
        <link:definition>0000013 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVENTORIES" roleURI="http://www.bauschhealth.com/role/INVENTORIES">
        <link:definition>0000014 - Disclosure - INVENTORIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLEASSETSANDGOODWILL" roleURI="http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILL">
        <link:definition>0000015 - Disclosure - INTANGIBLE ASSETS AND GOODWILL</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCRUEDANDOTHERCURRENTLIABILITIES" roleURI="http://www.bauschhealth.com/role/ACCRUEDANDOTHERCURRENTLIABILITIES">
        <link:definition>0000016 - Disclosure - ACCRUED AND OTHER CURRENT LIABILITIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTS" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTS">
        <link:definition>0000017 - Disclosure - FINANCING ARRANGEMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANS" roleURI="http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANS">
        <link:definition>0000018 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SHAREBASEDCOMPENSATION" roleURI="http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATION">
        <link:definition>0000019 - Disclosure - SHARE-BASED COMPENSATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCUMULATEDOTHERCOMPREHENSIVELOSS" roleURI="http://www.bauschhealth.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSS">
        <link:definition>0000020 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESEARCHANDDEVELOPMENT" roleURI="http://www.bauschhealth.com/role/RESEARCHANDDEVELOPMENT">
        <link:definition>0000021 - Disclosure - RESEARCH AND DEVELOPMENT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OTHEREXPENSEINCOMENET" roleURI="http://www.bauschhealth.com/role/OTHEREXPENSEINCOMENET">
        <link:definition>0000022 - Disclosure - OTHER EXPENSE (INCOME), NET</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXES" roleURI="http://www.bauschhealth.com/role/INCOMETAXES">
        <link:definition>0000023 - Disclosure - INCOME TAXES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EARNINGSLOSSPERSHARE" roleURI="http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARE">
        <link:definition>0000024 - Disclosure - EARNINGS (LOSS) PER SHARE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEGALPROCEEDINGS" roleURI="http://www.bauschhealth.com/role/LEGALPROCEEDINGS">
        <link:definition>0000025 - Disclosure - LEGAL PROCEEDINGS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATION" roleURI="http://www.bauschhealth.com/role/SEGMENTINFORMATION">
        <link:definition>0000026 - Disclosure - SEGMENT INFORMATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIESPolicies" roleURI="http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies">
        <link:definition>0000027 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUERECOGNITIONTables" roleURI="http://www.bauschhealth.com/role/REVENUERECOGNITIONTables">
        <link:definition>0000028 - Disclosure - REVENUE RECOGNITION (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSTables" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSTables">
        <link:definition>0000029 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVENTORIESTables" roleURI="http://www.bauschhealth.com/role/INVENTORIESTables">
        <link:definition>0000030 - Disclosure - INVENTORIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLEASSETSANDGOODWILLTables" roleURI="http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLTables">
        <link:definition>0000031 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCRUEDANDOTHERCURRENTLIABILITIESTables" roleURI="http://www.bauschhealth.com/role/ACCRUEDANDOTHERCURRENTLIABILITIESTables">
        <link:definition>0000032 - Disclosure - ACCRUED AND OTHER CURRENT LIABILITIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSTables" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSTables">
        <link:definition>0000033 - Disclosure - FINANCING ARRANGEMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSTables" roleURI="http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSTables">
        <link:definition>0000034 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SHAREBASEDCOMPENSATIONTables" roleURI="http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONTables">
        <link:definition>0000035 - Disclosure - SHARE-BASED COMPENSATION (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCUMULATEDOTHERCOMPREHENSIVELOSSTables" roleURI="http://www.bauschhealth.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSTables">
        <link:definition>0000036 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESEARCHANDDEVELOPMENTTables" roleURI="http://www.bauschhealth.com/role/RESEARCHANDDEVELOPMENTTables">
        <link:definition>0000037 - Disclosure - RESEARCH AND DEVELOPMENT (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OTHEREXPENSEINCOMENETTables" roleURI="http://www.bauschhealth.com/role/OTHEREXPENSEINCOMENETTables">
        <link:definition>0000038 - Disclosure - OTHER EXPENSE (INCOME), NET (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EARNINGSLOSSPERSHARETables" roleURI="http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARETables">
        <link:definition>0000039 - Disclosure - EARNINGS (LOSS) PER SHARE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONTables" roleURI="http://www.bauschhealth.com/role/SEGMENTINFORMATIONTables">
        <link:definition>0000040 - Disclosure - SEGMENT INFORMATION (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DESCRIPTIONOFBUSINESSNarrativeDetails" roleURI="http://www.bauschhealth.com/role/DESCRIPTIONOFBUSINESSNarrativeDetails">
        <link:definition>0000041 - Disclosure - DESCRIPTION OF BUSINESS - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails" roleURI="http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails">
        <link:definition>0000042 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUERECOGNITIONNarrativeDetails" roleURI="http://www.bauschhealth.com/role/REVENUERECOGNITIONNarrativeDetails">
        <link:definition>0000043 - Disclosure - REVENUE RECOGNITION - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUERECOGNITIONVariableConsiderationProvisionsDetails" roleURI="http://www.bauschhealth.com/role/REVENUERECOGNITIONVariableConsiderationProvisionsDetails">
        <link:definition>0000044 - Disclosure - REVENUE RECOGNITION - Variable Consideration Provisions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="REVENUERECOGNITIONActivityinAllowanceforCreditLossesDetails" roleURI="http://www.bauschhealth.com/role/REVENUERECOGNITIONActivityinAllowanceforCreditLossesDetails">
        <link:definition>0000045 - Disclosure - REVENUE RECOGNITION - Activity in Allowance for Credit Losses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LICENSINGAGREEMENTSANDDIVESTITURENarrativeDetails" roleURI="http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDDIVESTITURENarrativeDetails">
        <link:definition>0000046 - Disclosure - LICENSING AGREEMENTS AND DIVESTITURE - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESTRUCTURINGINTEGRATIONSEPARATIONANDIPOCOSTSNarrativeDetails" roleURI="http://www.bauschhealth.com/role/RESTRUCTURINGINTEGRATIONSEPARATIONANDIPOCOSTSNarrativeDetails">
        <link:definition>0000047 - Disclosure - RESTRUCTURING, INTEGRATION, SEPARATION AND IPO COSTS - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails">
        <link:definition>0000048 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisNarrativeDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisNarrativeDetails">
        <link:definition>0000049 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis, Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSCrosscurrencySwapsNarrativeDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSCrosscurrencySwapsNarrativeDetails">
        <link:definition>0000050 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Cross-currency Swaps, Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSCrosscurrencySwapsIncludedinConsolidatedBalanceSheetsDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSCrosscurrencySwapsIncludedinConsolidatedBalanceSheetsDetails">
        <link:definition>0000051 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Cross-currency Swaps Included in Consolidated Balance Sheets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSCrosscurrencySwapsEffectofHedgingInstrumentsonFinancialInstrumentsDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSCrosscurrencySwapsEffectofHedgingInstrumentsonFinancialInstrumentsDetails">
        <link:definition>0000052 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Cross-currency Swaps, Effect of Hedging Instruments on Financial Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSForeignCurrencyExchangeContractsNarrativeDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSForeignCurrencyExchangeContractsNarrativeDetails">
        <link:definition>0000053 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Foreign Currency Exchange Contracts, Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSForeignExchangeContractsIncludedinConsolidatedBalanceSheetsDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSForeignExchangeContractsIncludedinConsolidatedBalanceSheetsDetails">
        <link:definition>0000054 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Foreign Exchange Contracts Included in Consolidated Balance Sheets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSForeignExchangeContractsIncludedonConsolidatedStatementsofOperationsandConsolidatedStatementsofCashFlowsDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSForeignExchangeContractsIncludedonConsolidatedStatementsofOperationsandConsolidatedStatementsofCashFlowsDetails">
        <link:definition>0000055 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Foreign Exchange Contracts Included on Consolidated Statements of Operations and Consolidated Statements of Cash Flows (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAcquisitionrelatedContingentConsiderationObligationsNarrativeDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAcquisitionrelatedContingentConsiderationObligationsNarrativeDetails">
        <link:definition>0000056 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Acquisition-related Contingent Consideration Obligations, Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAcquisitionrelatedContingentConsiderationObligationsReconciliationofContingentConsiderationObligationsDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAcquisitionrelatedContingentConsiderationObligationsReconciliationofContingentConsiderationObligationsDetails">
        <link:definition>0000057 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Acquisition-related Contingent Consideration Obligations, Reconciliation of Contingent Consideration Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAssetsandLiabilitiesMeasuredonaNonRecurringBasisandFairValueofLongtermDebtNarrativeDetails" roleURI="http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSANDFINANCIALINSTRUMENTSAssetsandLiabilitiesMeasuredonaNonRecurringBasisandFairValueofLongtermDebtNarrativeDetails">
        <link:definition>0000058 - Disclosure - FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Assets and Liabilities Measured on a Non-Recurring Basis and Fair Value of Long-term Debt, Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INVENTORIESComponentsofInventoriesDetails" roleURI="http://www.bauschhealth.com/role/INVENTORIESComponentsofInventoriesDetails">
        <link:definition>0000059 - Disclosure - INVENTORIES - Components of Inventories (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLEASSETSANDGOODWILLMajorComponentsofIntangibleAssetsDetails" roleURI="http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLMajorComponentsofIntangibleAssetsDetails">
        <link:definition>0000060 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Major Components of Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLEASSETSANDGOODWILLNarrativeDetails" roleURI="http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLNarrativeDetails">
        <link:definition>0000061 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLEASSETSANDGOODWILLAmortizationExpenseDetails" roleURI="http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLAmortizationExpenseDetails">
        <link:definition>0000062 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Amortization Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INTANGIBLEASSETSANDGOODWILLChangesinCarryingAmountofGoodwillDetails" roleURI="http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLChangesinCarryingAmountofGoodwillDetails">
        <link:definition>0000063 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Changes in Carrying Amount of Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCRUEDANDOTHERCURRENTLIABILITIESSummaryofAccruedandOtherCurrentLiabilitiesDetails" roleURI="http://www.bauschhealth.com/role/ACCRUEDANDOTHERCURRENTLIABILITIESSummaryofAccruedandOtherCurrentLiabilitiesDetails">
        <link:definition>0000064 - Disclosure - ACCRUED AND OTHER CURRENT LIABILITIES - Summary of Accrued and Other Current Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSSummaryofConsolidatedLongtermDebtDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSSummaryofConsolidatedLongtermDebtDetails">
        <link:definition>0000065 - Disclosure - FINANCING ARRANGEMENTS - Summary of Consolidated Long-term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSCovenantComplianceDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSCovenantComplianceDetails">
        <link:definition>0000066 - Disclosure - FINANCING ARRANGEMENTS - Covenant Compliance (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSExchangeOfferDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSExchangeOfferDetails">
        <link:definition>0000067 - Disclosure - FINANCING ARRANGEMENTS - Exchange Offer (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSSummaryofAggregatePrincipalAmountsValidlyTenderedandAcceptedDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSSummaryofAggregatePrincipalAmountsValidlyTenderedandAcceptedDetails">
        <link:definition>0000068 - Disclosure - FINANCING ARRANGEMENTS - Summary of Aggregate Principal Amounts Validly Tendered and Accepted (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSSeniorSecuredCreditFacilitiesDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSSeniorSecuredCreditFacilitiesDetails">
        <link:definition>0000069 - Disclosure - FINANCING ARRANGEMENTS - Senior Secured Credit Facilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSSeniorSecuredNotesDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSSeniorSecuredNotesDetails">
        <link:definition>0000070 - Disclosure - FINANCING ARRANGEMENTS - Senior Secured Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSSeniorUnsecuredNotesDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSSeniorUnsecuredNotesDetails">
        <link:definition>0000071 - Disclosure - FINANCING ARRANGEMENTS - Senior Unsecured Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSWeightedAverageStatedRateofInterestDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSWeightedAverageStatedRateofInterestDetails">
        <link:definition>0000072 - Disclosure - FINANCING ARRANGEMENTS - Weighted Average Stated Rate of Interest (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSGainLossonExtinguishmentofDebtDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSGainLossonExtinguishmentofDebtDetails">
        <link:definition>0000073 - Disclosure - FINANCING ARRANGEMENTS - Gain (Loss) on Extinguishment of Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FINANCINGARRANGEMENTSAggregateMaturitiesofLongTermDebtDetails" roleURI="http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSAggregateMaturitiesofLongTermDebtDetails">
        <link:definition>0000074 - Disclosure - FINANCING ARRANGEMENTS - Aggregate Maturities of Long-Term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSComponentsofNetPeriodicBenefitCostDetails" roleURI="http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSComponentsofNetPeriodicBenefitCostDetails">
        <link:definition>0000075 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SHAREBASEDCOMPENSATIONNarrativeDetails" roleURI="http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONNarrativeDetails">
        <link:definition>0000076 - Disclosure - SHARE-BASED COMPENSATION - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SHAREBASEDCOMPENSATIONSummaryofSharebasedCompensationExpenseDetails" roleURI="http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONSummaryofSharebasedCompensationExpenseDetails">
        <link:definition>0000077 - Disclosure - SHARE-BASED COMPENSATION - Summary of Share-based Compensation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SHAREBASEDCOMPENSATIONSummaryofShareBasedCompensationAwardActivityDetails" roleURI="http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONSummaryofShareBasedCompensationAwardActivityDetails">
        <link:definition>0000078 - Disclosure - SHARE-BASED COMPENSATION - Summary of Share-Based Compensation Award Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCUMULATEDOTHERCOMPREHENSIVELOSSSummaryofComponentsofAccumulatedOtherComprehensiveLossDetails" roleURI="http://www.bauschhealth.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSSummaryofComponentsofAccumulatedOtherComprehensiveLossDetails">
        <link:definition>0000079 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary of Components of Accumulated Other Comprehensive Loss (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ACCUMULATEDOTHERCOMPREHENSIVELOSSNarrativeDetails" roleURI="http://www.bauschhealth.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSNarrativeDetails">
        <link:definition>0000080 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RESEARCHANDDEVELOPMENTSummaryofResearchandDevelopmentDetails" roleURI="http://www.bauschhealth.com/role/RESEARCHANDDEVELOPMENTSummaryofResearchandDevelopmentDetails">
        <link:definition>0000081 - Disclosure - RESEARCH AND DEVELOPMENT - Summary of Research and Development (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OTHEREXPENSEINCOMENETSummaryofOtherExpenseNetDetails" roleURI="http://www.bauschhealth.com/role/OTHEREXPENSEINCOMENETSummaryofOtherExpenseNetDetails">
        <link:definition>0000082 - Disclosure - OTHER EXPENSE (INCOME), NET - Summary of Other Expense, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OTHEREXPENSEINCOMENETNarrativeDetails" roleURI="http://www.bauschhealth.com/role/OTHEREXPENSEINCOMENETNarrativeDetails">
        <link:definition>0000083 - Disclosure - OTHER EXPENSE (INCOME), NET - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="INCOMETAXESNarrativeDetails" roleURI="http://www.bauschhealth.com/role/INCOMETAXESNarrativeDetails">
        <link:definition>0000084 - Disclosure - INCOME TAXES - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EARNINGSLOSSPERSHAREScheduleofCalculationofEarningsPerShareDetails" roleURI="http://www.bauschhealth.com/role/EARNINGSLOSSPERSHAREScheduleofCalculationofEarningsPerShareDetails">
        <link:definition>0000085 - Disclosure - EARNINGS (LOSS) PER SHARE - Schedule of Calculation of Earnings Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EARNINGSLOSSPERSHARENarrativeDetails" roleURI="http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARENarrativeDetails">
        <link:definition>0000086 - Disclosure - EARNINGS (LOSS) PER SHARE - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEGALPROCEEDINGSLegalProceedsandGovernmentalandRegulatoryInquiriesDetails" roleURI="http://www.bauschhealth.com/role/LEGALPROCEEDINGSLegalProceedsandGovernmentalandRegulatoryInquiriesDetails">
        <link:definition>0000087 - Disclosure - LEGAL PROCEEDINGS - Legal Proceeds and Governmental and Regulatory Inquiries (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEGALPROCEEDINGSSecuritiesandRICOClassActionsandRelatedMattersDetails" roleURI="http://www.bauschhealth.com/role/LEGALPROCEEDINGSSecuritiesandRICOClassActionsandRelatedMattersDetails">
        <link:definition>0000088 - Disclosure - LEGAL PROCEEDINGS - Securities and RICO Class Actions and Related Matters (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEGALPROCEEDINGSAntitrustDetails" roleURI="http://www.bauschhealth.com/role/LEGALPROCEEDINGSAntitrustDetails">
        <link:definition>0000089 - Disclosure - LEGAL PROCEEDINGS - Antitrust (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEGALPROCEEDINGSIntellectualPropertyDetails" roleURI="http://www.bauschhealth.com/role/LEGALPROCEEDINGSIntellectualPropertyDetails">
        <link:definition>0000090 - Disclosure - LEGAL PROCEEDINGS - Intellectual Property (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEGALPROCEEDINGSProductLiabilityDetails" roleURI="http://www.bauschhealth.com/role/LEGALPROCEEDINGSProductLiabilityDetails">
        <link:definition>0000091 - Disclosure - LEGAL PROCEEDINGS - Product Liability (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LEGALPROCEEDINGSGeneralCivilActionsDetails" roleURI="http://www.bauschhealth.com/role/LEGALPROCEEDINGSGeneralCivilActionsDetails">
        <link:definition>0000092 - Disclosure - LEGAL PROCEEDINGS - General Civil Actions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONNarrativeDetails" roleURI="http://www.bauschhealth.com/role/SEGMENTINFORMATIONNarrativeDetails">
        <link:definition>0000093 - Disclosure - SEGMENT INFORMATION - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONSegmentRevenuesandProfitDetails" roleURI="http://www.bauschhealth.com/role/SEGMENTINFORMATIONSegmentRevenuesandProfitDetails">
        <link:definition>0000094 - Disclosure - SEGMENT INFORMATION - Segment Revenues and Profit (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONDisaggregationofRevenueDetails" roleURI="http://www.bauschhealth.com/role/SEGMENTINFORMATIONDisaggregationofRevenueDetails">
        <link:definition>0000095 - Disclosure - SEGMENT INFORMATION - Disaggregation of Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONNarrativeDetails_1" roleURI="http://www.bauschhealth.com/role/SEGMENTINFORMATIONNarrativeDetails_1">
        <link:definition>0000096 - Disclosure - SEGMENT INFORMATION - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONRevenuebyGeographicAreaDetails" roleURI="http://www.bauschhealth.com/role/SEGMENTINFORMATIONRevenuebyGeographicAreaDetails">
        <link:definition>0000097 - Disclosure - SEGMENT INFORMATION - Revenue by Geographic Area (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SEGMENTINFORMATIONMajorCustomersDetails" roleURI="http://www.bauschhealth.com/role/SEGMENTINFORMATIONMajorCustomersDetails">
        <link:definition>0000098 - Disclosure - SEGMENT INFORMATION - Major Customers (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="bhc_XifaxanBrandedProductsMember" abstract="true" name="XifaxanBrandedProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_OtherLongTermDebtMember" abstract="true" name="OtherLongTermDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_OtherIncomeExpenseNet" abstract="false" name="OtherIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_InterestSettlementOnCrossCurrencySwaps" abstract="false" name="InterestSettlementOnCrossCurrencySwaps" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_TermLoanBFacilityDueJune2025Member" abstract="true" name="TermLoanBFacilityDueJune2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ShareBasedCompensationArrangementByShareBasedPaymentAwardInvoluntaryTerminationProgramCriteriaIfCircumstancesMetPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardInvoluntaryTerminationProgramCriteriaIfCircumstancesMetPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_ProductBrandsMember" abstract="true" name="ProductBrandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorSecured900NotesIntermediateHoldcoDueJanuary2028Member" abstract="true" name="SeniorSecured900NotesIntermediateHoldcoDueJanuary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LumifyParagraphIVProceedingsLupinANDALitigationMember" abstract="true" name="LumifyParagraphIVProceedingsLupinANDALitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorSecuredCreditFacilitiesMember" abstract="true" name="SeniorSecuredCreditFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_BaseRateFactorSecuredOvernightFinancingRateSOFROvernightIndexSwapRateMember" abstract="true" name="BaseRateFactorSecuredOvernightFinancingRateSOFROvernightIndexSwapRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_OmnibusIncentivePlan2014RetentionRSUGrantMember" abstract="true" name="OmnibusIncentivePlan2014RetentionRSUGrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentCovenantTotalLeverageRatioMaximum" abstract="false" name="DebtInstrumentCovenantTotalLeverageRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bhc_ConcentrationRiskNumberOfProducts" abstract="false" name="ConcentrationRiskNumberOfProducts" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_SOFRCDOREURIBORAndSONIARatesMember" abstract="true" name="SOFRCDOREURIBORAndSONIARatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ReserveForCustomerReturnsMember" abstract="true" name="ReserveForCustomerReturnsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_AccruedAndOtherCurrentLiabilitiesMember" abstract="true" name="AccruedAndOtherCurrentLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_IPOAndOverAllotmentOptionMember" abstract="true" name="IPOAndOverAllotmentOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentAnnualAmortizationRatePercentage" abstract="false" name="DebtInstrumentAnnualAmortizationRatePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_SeniorSecured1400NotesSecondLienDueOctober2030Member" abstract="true" name="SeniorSecured1400NotesSecondLienDueOctober2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DeferredIncomeTaxNoncashExpenseBenefit" abstract="false" name="DeferredIncomeTaxNoncashExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_GlumetzaAntitrustLitigationNonClassComplaintsMember" abstract="true" name="GlumetzaAntitrustLitigationNonClassComplaintsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorNotes700DueMarch2024Member" abstract="true" name="SeniorNotes700DueMarch2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_PartnerRelationshipsMember" abstract="true" name="PartnerRelationshipsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_OmnibusIncentivePlan2014Member" abstract="true" name="OmnibusIncentivePlan2014Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_IPOFoundersGrantsMember" abstract="true" name="IPOFoundersGrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_VisionCareSurgicalAndOphthalmicReportingUnitsMember" abstract="true" name="VisionCareSurgicalAndOphthalmicReportingUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LineOfCreditFacilityPercentageOfConsolidatedExcessCashFlowPayableAsMandatoryPrepayments" abstract="false" name="LineOfCreditFacilityPercentageOfConsolidatedExcessCashFlowPayableAsMandatoryPrepayments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_OutLicensedTechnologyMember" abstract="true" name="OutLicensedTechnologyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentCovenantComplianceSecuredLeverageRatio" abstract="false" name="DebtInstrumentCovenantComplianceSecuredLeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bhc_PerrigoIsraelPharmaceuticalsLtdLitigationMember" abstract="true" name="PerrigoIsraelPharmaceuticalsLtdLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_PaymentForContingentConsiderationLiabilityIncludingAccretionOperatingActivities" abstract="false" name="PaymentForContingentConsiderationLiabilityIncludingAccretionOperatingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_AllReportingUnitsExcludingOrthoDermatologicsVisionCareSurgicalAndOphthalmicMember" abstract="true" name="AllReportingUnitsExcludingOrthoDermatologicsVisionCareSurgicalAndOphthalmicMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_CertainExecutiveOfficersAndOtherMembersOfLeadershipMember" abstract="true" name="CertainExecutiveOfficersAndOtherMembersOfLeadershipMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LineOfCreditFacilityThresholdForIncrementalBorrowings" abstract="false" name="LineOfCreditFacilityThresholdForIncrementalBorrowings" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_SeniorNotes700DueJanuary2028Member" abstract="true" name="SeniorNotes700DueJanuary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ReserveForDiscountsAndAllowancesMember" abstract="true" name="ReserveForDiscountsAndAllowancesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ScheduleOfOtherIncomeAndExpensesLineItems" abstract="true" name="ScheduleOfOtherIncomeAndExpensesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bhc_Legalsettlementsandrelatedfees" abstract="false" name="Legalsettlementsandrelatedfees" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_AmounPharmaceuticalCompanySAEMember" abstract="true" name="AmounPharmaceuticalCompanySAEMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LitigationSettlementNumberOfObjectorsAppeals" abstract="false" name="LitigationSettlementNumberOfObjectorsAppeals" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_LossContingencyPlaintiffsNumberofGroupsofInvestors" abstract="false" name="LossContingencyPlaintiffsNumberofGroupsofInvestors" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_McKessonCorporationMember" abstract="true" name="McKessonCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentBasisSpreadOnVariableRateIfRateNotAscertainable" abstract="false" name="DebtInstrumentBasisSpreadOnVariableRateIfRateNotAscertainable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_ShowerToShowerProductLiabilityLitigationAllegingCausedOvarianCancerMesotheliomaOrBreastCancerMember" abstract="true" name="ShowerToShowerProductLiabilityLitigationAllegingCausedOvarianCancerMesotheliomaOrBreastCancerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SecuritiesExcludedFromComputationOfEarningsPerSharePerformanceConditionsNotMetAmount" abstract="false" name="SecuritiesExcludedFromComputationOfEarningsPerSharePerformanceConditionsNotMetAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bhc_ReportingUnitImpairmentTestEstimatedCashFlowsIncreaseDecreaseInDiscountRate" abstract="false" name="ReportingUnitImpairmentTestEstimatedCashFlowsIncreaseDecreaseInDiscountRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_SeniorNotes525DueFebruary2031Member" abstract="true" name="SeniorNotes525DueFebruary2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndEquityInstrumentsOtherThanOptionsAwardTypePercent" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndEquityInstrumentsOtherThanOptionsAwardTypePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_SaleOfStockNumberOfAdditionalSharesAvailableForIssuance" abstract="false" name="SaleOfStockNumberOfAdditionalSharesAvailableForIssuance" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bhc_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationAssetCash" abstract="false" name="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationAssetCash" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_AssetImpairmentChargesMember" abstract="true" name="AssetImpairmentChargesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentCovenantTermsFixedChargeCoverageRatio" abstract="false" name="DebtInstrumentCovenantTermsFixedChargeCoverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bhc_TimeBasedRSUMember" abstract="true" name="TimeBasedRSUMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems" abstract="true" name="FiniteLivedAndIndefiniteLivedIntangibleAssetsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bhc_BusinessAcquisitionContingentConsiderationFairValueDisclosure" abstract="false" name="BusinessAcquisitionContingentConsiderationFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_OrthoDermatologicsSegmentMember" abstract="true" name="OrthoDermatologicsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DerivativeGainExcludedComponent" abstract="false" name="DerivativeGainExcludedComponent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_LossContingencyNumberOfEntitiesExercisedOptOutRightPursuingAction" abstract="false" name="LossContingencyNumberOfEntitiesExercisedOptOutRightPursuingAction" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_AccruedProductReturnCurrent" abstract="false" name="AccruedProductReturnCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_OvertheCounterProductsMember" abstract="true" name="OvertheCounterProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ProceedsFromIssuanceInitialPublicOfferingNetOfCostsRelatedParty" abstract="false" name="ProceedsFromIssuanceInitialPublicOfferingNetOfCostsRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_DebtInstrumentCovenantTotalLeverageRatio" abstract="false" name="DebtInstrumentCovenantTotalLeverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_SeniorSecured1100NotesFirstLienDueSeptember2028Member" abstract="true" name="SeniorSecured1100NotesFirstLienDueSeptember2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_A2022OmnibusIncentivePlanMember" abstract="true" name="A2022OmnibusIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_A9.00SeniorNotesdueDecember2025Member" abstract="true" name="A9.00SeniorNotesdueDecember2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorSecured5.50NotesDueNovember2025Member" abstract="true" name="SeniorSecured5.50NotesDueNovember2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RevolvingCreditFacilityDueMay2027Member" abstract="true" name="RevolvingCreditFacilityDueMay2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RevolvingCreditFacilityDueFebruary2027Member" abstract="true" name="RevolvingCreditFacilityDueFebruary2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ROTCPerformanceBasedRestrictedStockUnitsMember" abstract="true" name="ROTCPerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RICOClassActionsMember" abstract="true" name="RICOClassActionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_UnitedStatesandPuertoRicoMember" abstract="true" name="UnitedStatesandPuertoRicoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LossContingencyStayOfApprovalPeriod" abstract="false" name="LossContingencyStayOfApprovalPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_DebtInstrumentAlternateTermNumberOfDaysPriorToScheduledMaturityInExcessOfPrincipalAmountThreshold" abstract="false" name="DebtInstrumentAlternateTermNumberOfDaysPriorToScheduledMaturityInExcessOfPrincipalAmountThreshold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_SeniorNotes925DueApril2026Member" abstract="true" name="SeniorNotes925DueApril2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LossContingencyPlaintiffsNumberofGroupsofInvestorsPending" abstract="false" name="LossContingencyPlaintiffsNumberofGroupsofInvestorsPending" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_ReserveForDistributionFeesMember" abstract="true" name="ReserveForDistributionFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LumifyParagraphIVProceedingsSlaybackANDALitigationMember" abstract="true" name="LumifyParagraphIVProceedingsSlaybackANDALitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ShowerToShowerProductLiabilityLitigationMember" abstract="true" name="ShowerToShowerProductLiabilityLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_BauschLombInternationalMember" abstract="true" name="BauschLombInternationalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_PriceAppreciationCreditMember" abstract="true" name="PriceAppreciationCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_NewRestatedCreditAgreementMember" abstract="true" name="NewRestatedCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_AnnualAmortizationOfIntangibleAssets" abstract="false" name="AnnualAmortizationOfIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_SeniorNotes900DueDecember2025Member" abstract="true" name="SeniorNotes900DueDecember2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetByMajorClassTable" abstract="true" name="ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetByMajorClassTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bhc_EffectiveIncomeTaxRateReconciliationLegalSettlementsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationLegalSettlementsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_NonExecutiveEligibleRecipientsMember" abstract="true" name="NonExecutiveEligibleRecipientsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ExtinguishmentOfDebtThirdPartyFees" abstract="false" name="ExtinguishmentOfDebtThirdPartyFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_SaleOfStockOverAllotmentTerm" abstract="false" name="SaleOfStockOverAllotmentTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_USDollarBaseRateAndCanadianDollarPrimeRateMember" abstract="true" name="USDollarBaseRateAndCanadianDollarPrimeRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_EffectiveIncomeTaxRateReconciliationWithholdingTaxIntercompanyDividendsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationWithholdingTaxIntercompanyDividendsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_SummaryOfResearchAndDevelopmentExpenseTableTextBlock" abstract="false" name="SummaryOfResearchAndDevelopmentExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bhc_SalixSegmentMember" abstract="true" name="SalixSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_CardinalHealthIncMember" abstract="true" name="CardinalHealthIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_InsuranceCoverageLawsuitMember" abstract="true" name="InsuranceCoverageLawsuitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DiversifiedProductsSegmentMember" abstract="true" name="DiversifiedProductsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RestructuringAndIntegrationCostsMember" abstract="true" name="RestructuringAndIntegrationCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ResearchAndDevelopmentExpenseProductRelated" abstract="false" name="ResearchAndDevelopmentExpenseProductRelated" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_EffectiveIncomeTaxRateReconciliationDiscreteItemsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationDiscreteItemsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_ExchangeOfferMember" abstract="true" name="ExchangeOfferMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorNotes525DueJanuary2030Member" abstract="true" name="SeniorNotes525DueJanuary2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_OtherRevenuesMember" abstract="true" name="OtherRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_OrthoDermatologicsReportingUnitMember" abstract="true" name="OrthoDermatologicsReportingUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DefaultJudgementMember" abstract="true" name="DefaultJudgementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LineOfCreditFacilityPercentageOfNetProceedsFromIncurrenceOfDebtPayableAsMandatoryPrepayments" abstract="false" name="LineOfCreditFacilityPercentageOfNetProceedsFromIncurrenceOfDebtPayableAsMandatoryPrepayments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_DeviceProductsMember" abstract="true" name="DeviceProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_TermFacilityDueMay2027Member" abstract="true" name="TermFacilityDueMay2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_EmployeeStockOptionsTimeBasedRestrictedStockUnitsandPerformanceBasedRestrictedStockUnitsMember" abstract="true" name="EmployeeStockOptionsTimeBasedRestrictedStockUnitsandPerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentPeriodicPaymentRemainingQuarterlyAmortization" abstract="false" name="DebtInstrumentPeriodicPaymentRemainingQuarterlyAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_DebtInstrumentAlternateTermPrincipalAmountMaturityThreshold" abstract="false" name="DebtInstrumentAlternateTermPrincipalAmountMaturityThreshold" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_CanadianSecuritiesLitigationMember" abstract="true" name="CanadianSecuritiesLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_GainContingencyNumberOfDefendants" abstract="false" name="GainContingencyNumberOfDefendants" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_LossContingencySettlementAgreementsNumberOfInsurers" abstract="false" name="LossContingencySettlementAgreementsNumberOfInsurers" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_ShareBasedCompensationArrangementByShareBasedPaymentAwardInvoluntaryTerminationProgramCriteriaIfCircumstancesMetExercisablePeriodFollowingAnniversaryPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardInvoluntaryTerminationProgramCriteriaIfCircumstancesMetExercisablePeriodFollowingAnniversaryPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_SoltaMedicalSegmentMember" abstract="true" name="SoltaMedicalSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_GainLossRelatedToLitigationSettlementGross" abstract="false" name="GainLossRelatedToLitigationSettlementGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_OtherCountriesMember" abstract="true" name="OtherCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_InternationalRxMember" abstract="true" name="InternationalRxMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_FairValueAdjustmentsChangesInEstimatesOfOtherFuturePaymentsMember" abstract="true" name="FairValueAdjustmentsChangesInEstimatesOfOtherFuturePaymentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ReserveForRebatesMember" abstract="true" name="ReserveForRebatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_AccountsReceivableAllowanceForForeignExchangeAndOther" abstract="false" name="AccountsReceivableAllowanceForForeignExchangeAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_PharmaceuticalProductsMember" abstract="true" name="PharmaceuticalProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorSecured6125NotesDueFebruary2027Member" abstract="true" name="SeniorSecured6125NotesDueFebruary2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_PaymentForDebtExtinguishmentOrDebtPrepaymentCostOperatingActivities" abstract="false" name="PaymentForDebtExtinguishmentOrDebtPrepaymentCostOperatingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_PreserVisionAREDSPatentLitigationMember" abstract="true" name="PreserVisionAREDSPatentLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_BauschLombMember" abstract="true" name="BauschLombMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_CustomerTopTenProductsMember" abstract="true" name="CustomerTopTenProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SOFRCDORAndEURIBORRatesMember" abstract="true" name="SOFRCDORAndEURIBORRatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_TaroPharmaceuticalsIncLitigationMember" abstract="true" name="TaroPharmaceuticalsIncLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentRepurchasedFaceAmountDecreaseOutstandingPrincipal" abstract="false" name="DebtInstrumentRepurchasedFaceAmountDecreaseOutstandingPrincipal" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_AccruedProductRebateCurrent" abstract="false" name="AccruedProductRebateCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_SummaryOfValuationAndQualifyingAccountsTableTextBlock" abstract="false" name="SummaryOfValuationAndQualifyingAccountsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bhc_LossContingencyNumberOfInsurancePolicyPeriods" abstract="false" name="LossContingencyNumberOfInsurancePolicyPeriods" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_ReportingUnitsExcludingOrthoDermatologicsMember" abstract="true" name="ReportingUnitsExcludingOrthoDermatologicsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ReportingUnitImpairmentTestLongTermGrowthRate" abstract="false" name="ReportingUnitImpairmentTestLongTermGrowthRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_ReportingUnitImpairmentTestEstimatedCashFlowsDiscountRate" abstract="false" name="ReportingUnitImpairmentTestEstimatedCashFlowsDiscountRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_PendingLitigationAgreedStipulationsOfDismissalSubmittedMember" abstract="true" name="PendingLitigationAgreedStipulationsOfDismissalSubmittedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RevenuesNetMember" abstract="true" name="RevenuesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorNotes850DueJanuary2027Member" abstract="true" name="SeniorNotes850DueJanuary2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_GoodwillImpairmentLossNotIncludedInAssetImpairmentCharges" abstract="false" name="GoodwillImpairmentLossNotIncludedInAssetImpairmentCharges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_DebtInstrumentPeriodicPaymentQuarterlyAmortization" abstract="false" name="DebtInstrumentPeriodicPaymentQuarterlyAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_RestrictedCashAndCashEquivalentsAndOtherSettlementDepositsFairValueDisclosure" abstract="false" name="RestrictedCashAndCashEquivalentsAndOtherSettlementDepositsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_TroubledDebtRestructuringDebtorTypeDomain" abstract="true" name="TroubledDebtRestructuringDebtorTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_AllowancesForLossesOnAccountsReceivableAndInventories" abstract="false" name="AllowancesForLossesOnAccountsReceivableAndInventories" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_SeparationAndInitialPublicOfferingCostsMember" abstract="true" name="SeparationAndInitialPublicOfferingCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_TroubledDebtRestructuringDebtorTypeAxis" abstract="true" name="TroubledDebtRestructuringDebtorTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="bhc_SeniorNotes625DueFebruary2029Member" abstract="true" name="SeniorNotes625DueFebruary2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ReserveForRebatesAdvertisingCreditsPortionMember" abstract="true" name="ReserveForRebatesAdvertisingCreditsPortionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_AcquisitionsLicensingAgreementsAndAssetsHeldForSaleDisclosuresTextBlock" abstract="false" name="AcquisitionsLicensingAgreementsAndAssetsHeldForSaleDisclosuresTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bhc_SeniorNotes6125DueApril2025Member" abstract="true" name="SeniorNotes6125DueApril2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ApotexIncLitigationMember" abstract="true" name="ApotexIncLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ValeantUSSecuritiesLitigationMember" abstract="true" name="ValeantUSSecuritiesLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RestructuringAndRelatedActivitiesAndInitialPublicOfferingCostsDisclosureTextBlock" abstract="false" name="RestructuringAndRelatedActivitiesAndInitialPublicOfferingCostsDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bhc_AccretionForTimeValueOfMoneyMember" abstract="true" name="AccretionForTimeValueOfMoneyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_IncreaseDecreaseInRestrictedCashAndOtherSettlementDepositsCurrent" abstract="false" name="IncreaseDecreaseInRestrictedCashAndOtherSettlementDepositsCurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_HighlyLiquidInvestmentsMaturityPeriod" abstract="false" name="HighlyLiquidInvestmentsMaturityPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_SeniorNotes500DueFebruary2029Member" abstract="true" name="SeniorNotes500DueFebruary2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentCovenantInterestCoverageRatioMinimum" abstract="false" name="DebtInstrumentCovenantInterestCoverageRatioMinimum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bhc_DebtInstrumentCreditSpreadAdjustmentOnVariableRate" abstract="false" name="DebtInstrumentCreditSpreadAdjustmentOnVariableRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_SeniorSecured5.75NotesDueAugust2027Member" abstract="true" name="SeniorSecured5.75NotesDueAugust2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ExecutiveOfficerExcludingTheChiefExecutiveOfficerMember" abstract="true" name="ExecutiveOfficerExcludingTheChiefExecutiveOfficerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RestrictedCashAndOtherSettlementDepositsCurrent" abstract="false" name="RestrictedCashAndOtherSettlementDepositsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_A2022OmnibusIncentivePlanRetentionProgramMember" abstract="true" name="A2022OmnibusIncentivePlanRetentionProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorSecured4875NotesDueJune2028Member" abstract="true" name="SeniorSecured4875NotesDueJune2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ShareBasedPaymentArrangementOptionAndRestrictedStockUnitsRSUsMember" abstract="true" name="ShareBasedPaymentArrangementOptionAndRestrictedStockUnitsRSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DoctorsAllergyFormulaLLCLitigationMember" abstract="true" name="DoctorsAllergyFormulaLLCLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_A1375209BCLtdMember" abstract="true" name="A1375209BCLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LossContingencyStayOfApprovalMotionToExtendPeriod" abstract="false" name="LossContingencyStayOfApprovalMotionToExtendPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_DebtInstrumentCovenantTermsSecuredLeverageRatio" abstract="false" name="DebtInstrumentCovenantTermsSecuredLeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bhc_ReserveForChargebacksMember" abstract="true" name="ReserveForChargebacksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorNotes500DueJanuary2028Member" abstract="true" name="SeniorNotes500DueJanuary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_PerformanceBasedRestrictedStockUnitsMember" abstract="true" name="PerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LineOfCreditFacilityThresholdForIncrementalBorrowingsPercentage" abstract="false" name="LineOfCreditFacilityThresholdForIncrementalBorrowingsPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_BrandedandOtherGenericProductsMember" abstract="true" name="BrandedandOtherGenericProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ScheduleOfOtherIncomeAndExpensesTable" abstract="true" name="ScheduleOfOtherIncomeAndExpensesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bhc_MeasurementInputWeightedAverageDiscountRateMember" abstract="true" name="MeasurementInputWeightedAverageDiscountRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentCovenantAmountAvailableForRestrictedPayments" abstract="false" name="DebtInstrumentCovenantAmountAvailableForRestrictedPayments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_GainContingencyNumberOfProceedings" abstract="false" name="GainContingencyNumberOfProceedings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_AmerisourceBergenCorporationMember" abstract="true" name="AmerisourceBergenCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SalixReportingUnitMember" abstract="true" name="SalixReportingUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RestructuringChargesAndInitialPublicOfferingCosts" abstract="false" name="RestructuringChargesAndInitialPublicOfferingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_TermLoanBFacilityDueFebruary2027Member" abstract="true" name="TermLoanBFacilityDueFebruary2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeparationPerformanceBasedRestrictedStockUnitsMember" abstract="true" name="SeparationPerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_EuropeInterbankOfferedRateEURIBORMember" abstract="true" name="EuropeInterbankOfferedRateEURIBORMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ResearchAndDevelopmentExpenseQualityAssurance" abstract="false" name="ResearchAndDevelopmentExpenseQualityAssurance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_PlaintiffsDirectPurchasersMember" abstract="true" name="PlaintiffsDirectPurchasersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DiscontinuedProductLinesMember" abstract="true" name="DiscontinuedProductLinesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LineOfCreditFacilityPercentageOfNetCashProceedsFromAssetSalesOutsideOrdinaryCourseOfBusinessPayableAsMandatoryPrepayments" abstract="false" name="LineOfCreditFacilityPercentageOfNetCashProceedsFromAssetSalesOutsideOrdinaryCourseOfBusinessPayableAsMandatoryPrepayments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_DebtInstrumentCovenantRedemptionAndDischargeConditionAmountIfCircumstancesMet" abstract="false" name="DebtInstrumentCovenantRedemptionAndDischargeConditionAmountIfCircumstancesMet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_SeniorSecuredCreditFacilityMember" abstract="true" name="SeniorSecuredCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_MilestonePaymentRelatedToCertainProductMember" abstract="true" name="MilestonePaymentRelatedToCertainProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_PadagisLitigationMember" abstract="true" name="PadagisLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_EffectiveIncomeTaxRateReconciliationExpenseFilingTaxReturnsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationExpenseFilingTaxReturnsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_PatentInfringementLitigationMember" abstract="true" name="PatentInfringementLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_RevolvingCreditFacilityDueJune2023Member" abstract="true" name="RevolvingCreditFacilityDueJune2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_SeniorNotes725DueMay2029Member" abstract="true" name="SeniorNotes725DueMay2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_LossContingencyNewClaimsFiledButNotYetServedNumber" abstract="false" name="LossContingencyNewClaimsFiledButNotYetServedNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bhc_ViolationofCanadianProvincialSecuritiesLegislationMember" abstract="true" name="ViolationofCanadianProvincialSecuritiesLegislationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_TSRPerformanceBasedRestrictedStockUnitsMember" abstract="true" name="TSRPerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndEquityInstrumentsOtherThanOptionsGrantsInPeriodGross" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndEquityInstrumentsOtherThanOptionsGrantsInPeriodGross" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bhc_IncreaseDecreaseInAccruedLiabilitiesCurrent" abstract="false" name="IncreaseDecreaseInAccruedLiabilitiesCurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_ShareBasedCompensationArrangementByShareBasedPaymentAwardInvoluntaryTerminationProgramCriteriaIfCircumstancesMetAnniversaryPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardInvoluntaryTerminationProgramCriteriaIfCircumstancesMetAnniversaryPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_GainContingencyStayOfApprovalPeriod" abstract="false" name="GainContingencyStayOfApprovalPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bhc_LineOfCreditFacilityPercentageOfNetCashProceedsOfInsuranceAndCondemnationProceedsFromPropertyOrAssetLossesPayableAsMandatoryPrepayments" abstract="false" name="LineOfCreditFacilityPercentageOfNetCashProceedsOfInsuranceAndCondemnationProceedsFromPropertyOrAssetLossesPayableAsMandatoryPrepayments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_UnrecognizedTaxBenefitsIncludingInterestAndPenalties" abstract="false" name="UnrecognizedTaxBenefitsIncludingInterestAndPenalties" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_AmortizationOfIntangibleAssetsExcludingAmortizationAllocatedToRevenuesCostOfGoodSold" abstract="false" name="AmortizationOfIntangibleAssetsExcludingAmortizationAllocatedToRevenuesCostOfGoodSold" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_ExecutiveOfficerAndCertainOtherEmployeesExcludingTheChiefExecutiveOfficerMember" abstract="true" name="ExecutiveOfficerAndCertainOtherEmployeesExcludingTheChiefExecutiveOfficerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_BusinessCombinationContingentConsiderationNoncurrentLiability" abstract="false" name="BusinessCombinationContingentConsiderationNoncurrentLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bhc_TermLoanBFacilityDueNovember2025Member" abstract="true" name="TermLoanBFacilityDueNovember2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_NorwichPharmaceuticalsIncLitigationMember" abstract="true" name="NorwichPharmaceuticalsIncLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_MSNLaboratoriesPrivateLtdLitigationMember" abstract="true" name="MSNLaboratoriesPrivateLtdLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_DebtInstrumentRedemptionPricePercentageChangeinControl" abstract="false" name="DebtInstrumentRedemptionPricePercentageChangeinControl" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bhc_LitigationwithFormerSalixCEOMember" abstract="true" name="LitigationwithFormerSalixCEOMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_GlumetzaAntitrustLitigationMember" abstract="true" name="GlumetzaAntitrustLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
