<SEC-DOCUMENT>0000849146-17-000071.txt : 20170329
<SEC-HEADER>0000849146-17-000071.hdr.sgml : 20170329
<ACCEPTANCE-DATETIME>20170329163031
ACCESSION NUMBER:		0000849146-17-000071
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170328
FILED AS OF DATE:		20170329
DATE AS OF CHANGE:		20170329

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Lifevantage Corp
		CENTRAL INDEX KEY:			0000849146
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				841097796
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		9785 S. MONROE STREET
		STREET 2:		SUITE 300
		CITY:			SANDY
		STATE:			UT
		ZIP:			84070
		BUSINESS PHONE:		801-432-9000

	MAIL ADDRESS:	
		STREET 1:		9785 S. MONROE STREET
		STREET 2:		SUITE 300
		CITY:			SANDY
		STATE:			UT
		ZIP:			84070

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LIFELINE THERAPEUTICS, INC.
		DATE OF NAME CHANGE:	20041019

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	YAAK RIVER RESOURCES INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ANDRAPLEX CORP
		DATE OF NAME CHANGE:	19920406

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Fife Steven R
		CENTRAL INDEX KEY:			0001408954

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35647
		FILM NUMBER:		17722591

	MAIL ADDRESS:	
		STREET 1:		C/O LECG 2000 POWELL STREET, STE 600
		CITY:			EMERYVILLE
		STATE:			CA
		ZIP:			94608
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_149081940535790.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-03-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000849146</issuerCik>
        <issuerName>Lifevantage Corp</issuerName>
        <issuerTradingSymbol>LFVN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001408954</rptOwnerCik>
            <rptOwnerName>Fife Steven R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>LIFEVANTAGE CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>9785 SOUTH MONROE STREET, SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>SANDY</rptOwnerCity>
            <rptOwnerState>UT</rptOwnerState>
            <rptOwnerZipCode>84070</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-03-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>90000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>90000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">These shares were acquired pursuant to a restricted stock award granted March 28, 2017, which vests on the anniversary date of reporting person's hire date in three equal annual installments, March 13, 2018, March 13, 2019, and March 13, 2020, subject to continued service with the Company.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Steven R. Fife</signatureName>
        <signatureDate>2017-03-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
