<SEC-DOCUMENT>0000950123-00-006039-index.html : 20000920

<SEC-HEADER>0000950123-00-006039.hdr.sgml : 20000920

ACCESSION NUMBER:		0000950123-00-006039

CONFORMED SUBMISSION TYPE:	10-K/A

PUBLIC DOCUMENT COUNT:		4

CONFORMED PERIOD OF REPORT:	19991231

FILED AS OF DATE:		20000627


FILER:


	COMPANY DATA:	

		COMPANY CONFORMED NAME:			MERCK & CO INC

		CENTRAL INDEX KEY:			0000064978

		STANDARD INDUSTRIAL CLASSIFICATION:	 [2834
]
		IRS NUMBER:				221109110

		STATE OF INCORPORATION:			NJ

		FISCAL YEAR END:			1231

</COMPANY-DATA>


		FILING VALUES:

			FORM TYPE:		10-K/A

			SEC ACT:		

			SEC FILE NUMBER:	001-03305

			FILM NUMBER:		661197

</FILING-VALUES>


			BUSINESS ADDRESS:	

				STREET 1:		ONE MERCK DR

				STREET 2:		P O BOX 100

				CITY:			WHITEHOUSE STATION

				STATE:			NJ

				ZIP:			08889-0100

				BUSINESS PHONE:		9084234044

</BUSINESS-ADDRESS>


				MAIL ADDRESS:	

					STREET 1:		ONE MERCK DR

					STREET 2:		PO BOX 100 WS3AB-05

					CITY:			WHITEHOUSE STATION

					STATE:			NJ

					ZIP:			08889-0100

</MAIL-ADDRESS>

</FILER>

</SEC-HEADER>

<DOCUMENT>
<TYPE>10-K/A
<SEQUENCE>1
<FILENAME>e10-ka.txt
<DESCRIPTION>MERCK AND CO
<TEXT>
Document 1 - file: e10-ka.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.A
<SEQUENCE>2
<FILENAME>ex99-a.txt
<DESCRIPTION>FINANCIAL STATEMENTS ON 11-K
<TEXT>
Document 2 - file: ex99-a.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.B
<SEQUENCE>3
<FILENAME>ex99-b.txt
<DESCRIPTION>FINANCIAL STATEMENTS ON 11-K
<TEXT>
Document 3 - file: ex99-b.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.C
<SEQUENCE>4
<FILENAME>ex99-c.txt
<DESCRIPTION>FINANCIAL STATEMENTS ON 11-K
<TEXT>
Document 4 - file: ex99-c.txt

</DOCUMENT>
</SEC-DOCUMENT>