EXHIBIT 24.1

POWER OF ATTORNEY

     Each of the undersigned does hereby appoint CELIA A. COLBERT and KENNETH C. FRAZIER and each of them, severally, his/her true and lawful attorney or attorneys to execute on behalf of the undersigned (whether on behalf of the Company, or as an officer or director thereof, or by attesting the seal of the Company, or otherwise) the Form 10-K Annual Report of Merck & Co., Inc. for the fiscal year ended December 31, 2003 under the Securities Exchange Act of 1934, including amendments thereto and all exhibits and other documents in connection therewith.

     IN WITNESS WHEREOF, this instrument has been duly executed as of the 24^th day of February, 2004.

MERCK & CO., Inc.
By	/s/ Raymond V. Gilmartin
	Raymond V. Gilmartin
	(Chairman of the Board, President
	and Chief Executive Officer)

/s/ Raymond V. Gilmartin           Raymond V. Gilmartin	Chairman of the Board, President and Chief Executive Officer (Principal Executive Officer; Director)
/s/ Judy C. Lewent           Judy C. Lewent	Executive Vice President & Chief Financial Officer President, Human Health Asia; (Principal Financial Officer)
/s/ Richard C. Henriques, Jr.           Richard C. Henriques, Jr.	Vice President, Controller (Principal Accounting Officer)

DIRECTORS

/s/ Lawrence A. Bossidy	/s/ Heidi G. Miller
Lawrence A. Bossidy	Heidi G. Miller
/s/ William G. Bowen	/s/ Thomas E. Shenk
William G. Bowen	Thomas E. Shenk
/s/ Johnnetta B. Cole
Johnnetta B. Cole	Anne M. Tatlock
/s/ William M. Daley	/s/ Samuel O. Thier
William M. Daley	Samuel O. Thier
/s/ William B. Harrison, Jr.	/s / Wendell P. Weeks
William B. Harrison, Jr.	Wendell P. Weeks
/s/ William N. Kelley	/s/ Peter C. Wendell
William N. Kelley	Peter C. Wendell