EXHIBIT 24

POWERS OF ATTORNEY

          The undersigned directors of OMNICARE, INC. (“Company”) hereby appoints JOEL F. GEMUNDER, DAVID W. FROESEL, JR. and CHERYL D. HODGES as his/her true and lawful attorneys-in-fact for the purpose of signing the Company’s Annual Report on Form 10-K for the year ended December 31, 2007, and all amendments thereto, to be filed with the Securities and Exchange Commission. Each of such attorneys-in-fact is appointed with full power to act without the other.

/s/ John T. Crotty	February 18, 2008
John T. Crotty	Date
/s/ Charles H. Erhart, Jr.	February 16, 2008
Charles H. Erhart, Jr.	Date
/s/ Sandra E. Laney	February 20, 2008
Sandra E. Laney	Date
/s/ Andrea R. Lindell, Ph.D., RN	February 18, 2008
Andrea R. Lindell, Ph.D., RN	Date
/s/ John H. Timoney	February 16, 2008
John H. Timoney	Date
/s/ Jeffrey W. Ubben	February 26, 2008
Jeffrey W. Ubben	Date
/s/ Amy Wallman	February 17, 2008
Amy Wallman	Date