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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 KH+rtBf45hgE4ewU4lnivSPe/3wlUhzzRaa9y1OL1+GYHZU1yTsJ+ZcP7x1AYBTz
 vr/90bnvCxaPb86kXopFmA==

<SEC-DOCUMENT>0001179110-06-017487.txt : 20060824
<SEC-HEADER>0001179110-06-017487.hdr.sgml : 20060824
<ACCEPTANCE-DATETIME>20060824160104
ACCESSION NUMBER:		0001179110-06-017487
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060817
FILED AS OF DATE:		20060824
DATE AS OF CHANGE:		20060824

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERLEUKIN GENETICS INC
		CENTRAL INDEX KEY:			0001037649
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		IRS NUMBER:				943123681
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		135 BEAVER ST
		CITY:			WATHAM
		STATE:			MA
		ZIP:			02452
		BUSINESS PHONE:		1-781-398-0700

	MAIL ADDRESS:	
		STREET 1:		135 BEAVER ST
		CITY:			WATHAM
		STATE:			MA
		ZIP:			02452

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MEDICAL SCIENCE SYSTEMS INC
		DATE OF NAME CHANGE:	19971003

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Finkelstein David A
		CENTRAL INDEX KEY:			0001373776

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32715
		FILM NUMBER:		061053186

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		781-398-0700

	MAIL ADDRESS:	
		STREET 1:		C/O INTERLEUKIN GENETICS, INC.
		STREET 2:		135 BEAVER STREET
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02452
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-08-17</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001037649</issuerCik>
        <issuerName>INTERLEUKIN GENETICS INC</issuerName>
        <issuerTradingSymbol>ILI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001373776</rptOwnerCik>
            <rptOwnerName>Finkelstein David A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>INTERLEUKIN GENETICS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>135 BEAVER STREET</rptOwnerStreet2>
            <rptOwnerCity>WALTHAM</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>02452</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Strategy Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12500</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents common stock awarded on August 17, 2006, pursuant to an Employment Agreement</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/  David A. Finkelstein</signatureName>
        <signatureDate>2006-08-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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