PROSPECTUS SUPPLEMENT DATED MARCH 8, 1994
(To Prospectus dated January 14, 1994)


MEDCO CONTAINMENT SERVICES, INC.
6% Convertible Subordinated Debentures due 2001
(Interest payable March 1 and September 1)


		The first paragraph under the heading "Conversion of Debentures" 
on page 8 of the Prospectus is amended by deleting the sentence "Debentures 
surrendered for conversion after a record date but prior to the next 
succeeding interest payment date must be accompanied by payment of an 
amount equal to the interest thereon which is to be paid on such interest 
payment date."






212-820-8119

(FAX: 212-820-8585)

March 8, 1994


Securities and Exchange Commission
450 Fifth Street, N.W.
Judiciary Plaza
Washington, D.C.  20549

RE:	Merck & Co., Inc.
Registration Statement on Form S-3
Registration No. 33-51785
Submission pursuant to Rule 424(b)(3)

Ladies and Gentlemen:

Pursuant to Rule 424(b)(3) of the Securities Act of 1933, on behalf 
of Merck & Co., Inc., enclosed for filing is a copy of a final form of 
prospectus supplement.

If you have any questions concerning the enclosed, please telephone 
the undersigned at (212) 820-8119.

							Sincerely,

							Jon Filderman
/lsa
Enclosure