-----BEGIN PRIVACY-ENHANCED MESSAGE-----
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,
 Hbvm1YWzdeH/xz5gcbvKaGfiegjgr5QJTDr6v7lVpQGLn+z/Q9NmZzbA8d+xjAWf
 L3ZeoGRxRPQoa4JhmJIQrg==

<SEC-DOCUMENT>0001181431-03-007103.txt : 20030507
<SEC-HEADER>0001181431-03-007103.hdr.sgml : 20030507
<ACCEPTANCE-DATETIME>20030507172738
ACCESSION NUMBER:		0001181431-03-007103
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030507
FILED AS OF DATE:		20030507

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MANNATECH INC
		CENTRAL INDEX KEY:			0001056358
		STANDARD INDUSTRIAL CLASSIFICATION:	MEDICINAL CHEMICALS & BOTANICAL PRODUCTS [2833]
		IRS NUMBER:				752508900
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		600 SOUTH ROYAL LANE
		STREET 2:		SUITE 200
		CITY:			COPPELL
		STATE:			TX
		ZIP:			75019
		BUSINESS PHONE:		9724717400

	MAIL ADDRESS:	
		STREET 1:		600 SOUTH ROYAL LANE
		STREET 2:		SUITE 200
		CITY:			COPPELL
		STATE:			TX
		ZIP:			75019

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BOURGOYNE JEFFREY P
		CENTRAL INDEX KEY:			0001106547

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24657
		FILM NUMBER:		03686858

	BUSINESS ADDRESS:	
		STREET 1:		600 S ROYAL LANE
		STREET 2:		SUITE 200
		CITY:			COPPELL
		STATE:			TX
		ZIP:			75019
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>rrd8474.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="http://www.RRDnetfiler.com/XSL/SEC_Form_3.xsl"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

<documentType>3</documentType>
<periodOfReport>2003-05-07</periodOfReport>
    <noSecuritiesOwned>0</noSecuritiesOwned>
<issuer><issuerCik>0001056358</issuerCik>
        <issuerName>MANNATECH INC</issuerName>
<issuerTradingSymbol>MTEX</issuerTradingSymbol></issuer>
<reportingOwner>
<reportingOwnerId>
<rptOwnerCik>0001106547</rptOwnerCik>
            <rptOwnerName>BOURGOYNE JEFFREY P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
<reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>1</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle>Sr. VP Supply Chain/Assoc Care</officerTitle>
<otherText></otherText></reportingOwnerRelationship></reportingOwner>
<nonDerivativeSecurity>
<securityTitle>
<value>Common Stock $0.0001 par value</value></securityTitle>
<transactionAmounts>
<transactionShares>
<value>7000</value></transactionShares></transactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value></directOrIndirectOwnership>
<natureOfOwnership>
<value></value></natureOfOwnership></ownershipNature></nonDerivativeSecurity>
<derivativeSecurity>
<securityTitle>
<value>Right to buy common stock, $0.0001 par value</value></securityTitle>
<conversionOrExercisePrice>
<value>1.35</value></conversionOrExercisePrice>
<exerciseDate>
<value>1998-05-14</value></exerciseDate>
<expirationDate>
<value>2007-05-14</value></expirationDate>
<underlyingSecurity>
<underlyingSecurityTitle>
<value>Common Stock</value></underlyingSecurityTitle>
<underlyingSecurityShares>
<value>7000</value></underlyingSecurityShares></underlyingSecurity>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value></directOrIndirectOwnership>
<natureOfOwnership>
<value></value></natureOfOwnership></ownershipNature></derivativeSecurity>
<derivativeSecurity>
<securityTitle>
<value>Right to buy common stock, $0.0001 par value</value></securityTitle>
<conversionOrExercisePrice>
<value>8.00</value></conversionOrExercisePrice>
<exerciseDate>
<value>2000-10-17</value></exerciseDate>
<expirationDate>
<value>2009-10-17</value></expirationDate>
<underlyingSecurity>
<underlyingSecurityTitle>
<value>Common Stock</value></underlyingSecurityTitle>
<underlyingSecurityShares>
<value>86000</value></underlyingSecurityShares></underlyingSecurity>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value></directOrIndirectOwnership>
<natureOfOwnership>
<value></value></natureOfOwnership></ownershipNature></derivativeSecurity>
<derivativeSecurity>
<securityTitle>
<value>Right to buy common stock, $0.0001 par value</value></securityTitle>
<conversionOrExercisePrice>
<value>2.63</value></conversionOrExercisePrice>
<exerciseDate>
<value>2001-08-23</value></exerciseDate>
<expirationDate>
<value>2010-08-23</value></expirationDate>
<underlyingSecurity>
<underlyingSecurityTitle>
<value>Common Stock</value></underlyingSecurityTitle>
<underlyingSecurityShares>
<value>50000</value></underlyingSecurityShares></underlyingSecurity>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value></directOrIndirectOwnership>
<natureOfOwnership>
<value></value></natureOfOwnership></ownershipNature></derivativeSecurity>
<ownerSignature>
<signatureName>Jeffrey P. Bougoyne</signatureName>
<signatureDate>2003-05-07</signatureDate></ownerSignature></ownershipDocument>


</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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