<SUBMISSION>
<ACCESSION-NUMBER>0001209191-18-025855
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20180420
<FILING-DATE>20180423
<DATE-OF-FILING-DATE-CHANGE>20180423
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Spillane Thomas
<CIK>0001355986
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-32849
<FILM-NUMBER>18769352
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>C/O CASTLE BRANDS INC.
<STREET2>570 LEXINGTON AVENUE
<CITY>NEW YORK
<STATE>NY
<ZIP>10022
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>Castle Brands Inc
<CIK>0001311538
<ASSIGNED-SIC>2080
<IRS-NUMBER>000000000
<STATE-OF-INCORPORATION>FL
<FISCAL-YEAR-END>0331
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>122 EAST 42ND STREET
<STREET2>SUITE 4700
<CITY>NEW YORK
<STATE>NY
<ZIP>10168
<PHONE>646-356-0200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>122 EAST 42ND STREET
<STREET2>SUITE 4700
<CITY>NEW YORK
<STATE>NY
<ZIP>10168
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-04-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001311538</issuerCik>
        <issuerName>Castle Brands Inc</issuerName>
        <issuerTradingSymbol>ROX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001355986</rptOwnerCik>
            <rptOwnerName>Spillane Thomas</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CASTLE BRANDS INC.</rptOwnerStreet1>
            <rptOwnerStreet2>122 E. 42 ST., SUITE 5000</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10168</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-04-20</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>90000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>429494</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Restricted shares of common stock issued pursuant to the issuer's 2013 Incentive Compensation Plan, as amended. Restricted shares vest in four equal annual installments commencing on the first anniversary of the date of grant provided Mr. Spillane is then still an employee of the issuer, subject to earlier vesting upon his death or disability or a change of control of the issuer.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Thomas Spillane</signatureName>
        <signatureDate>2018-04-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
