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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,
 E2hi3Pv/ELegsMJqd1G83h5IxMfHJD1ajYP/imeFJ1+hHQMw2fQzOeBp7YC37FkS
 o8gKTAINvq3EDlThY9X1QQ==

<SEC-DOCUMENT>0001019056-08-000859.txt : 20080708
<SEC-HEADER>0001019056-08-000859.hdr.sgml : 20080708
<ACCEPTANCE-DATETIME>20080708104206
ACCESSION NUMBER:		0001019056-08-000859
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080707
FILED AS OF DATE:		20080708
DATE AS OF CHANGE:		20080708

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MEDICAL NUTRITION USA INC
		CENTRAL INDEX KEY:			0000722617
		STANDARD INDUSTRIAL CLASSIFICATION:	MEDICINAL CHEMICALS & BOTANICAL PRODUCTS [2833]
		IRS NUMBER:				222383025
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			0131

	BUSINESS ADDRESS:	
		STREET 1:		MEDICAL NUTRITION USA, INC.
		STREET 2:		10 W FOREST AVE
		CITY:			ENGLEWOOD
		STATE:			NJ
		ZIP:			07631
		BUSINESS PHONE:		2015691188

	MAIL ADDRESS:	
		STREET 1:		10 W FOREST AVE
		STREET 2:		-
		CITY:			ENGLEWOOD
		STATE:			NJ
		ZIP:			07631

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MEDICAL NUTRITION INC
		DATE OF NAME CHANGE:	20030910

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GENDER SCIENCES INC
		DATE OF NAME CHANGE:	20001101

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MNI GROUP INC
		DATE OF NAME CHANGE:	19941019

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NEWMAN FRANK A
		CENTRAL INDEX KEY:			0001196750

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33411
		FILM NUMBER:		08942239

	BUSINESS ADDRESS:	
		STREET 1:		C/O JABIL CIRCUIT INC
		STREET 2:		10560 DR. MARTIN LUTHER KING JR. ST N
		CITY:			ST PETERSBURG
		STATE:			FL
		ZIP:			33716-3718
		BUSINESS PHONE:		727-803-3309

	MAIL ADDRESS:	
		STREET 1:		10560 DR. MARTIN LUTHER KING JR. ST N
		CITY:			ST PETERSBURG
		STATE:			FL
		ZIP:			33716-3718
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-07-07</periodOfReport>

    <issuer>
        <issuerCik>0000722617</issuerCik>
        <issuerName>MEDICAL NUTRITION USA INC</issuerName>
        <issuerTradingSymbol>MDNU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001196750</rptOwnerCik>
            <rptOwnerName>NEWMAN FRANK A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10 WEST FOREST AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ENGLEWOOD,</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07631</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman, CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-07-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.285</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1831467</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">includes 33,333 shares from stock award of 12/18/06 and 25,000 shares from stock award of 1/8/08 which have not yet vested</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ FRANK A. NEWMAN</signatureName>
        <signatureDate>2008-07-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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