1 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 18, 1998 /s/ Ronald K. Baur ----------------------- Ronald K. Baur 2 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 18, 1998 /s/ Kenneth W. Chesterman ------------------------- Kenneth W. Chesterman 3 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 17, 1998 /s/ Charles H. Erhart ----------------------- Charles H. Erhart 4 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 18, 1998 /s/ Mary Lou Fox ----------------------- Mary Lou Fox 5 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 17, 1998 /s/ Thomas C. Hutton ----------------------- Thomas C. Hutton 6 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 17, 1998 /s/ Patrick E. Keefe ----------------------- Patrick E. Keefe 7 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 18, 1998 /s/ Sandra E. Laney ----------------------- Sandra E. Laney 8 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 17, 1998 /s/ Andrea R. Lindell ----------------------- Andrea R. Lindell 9 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 17, 1998 /s/ Sheldon Margen ----------------------- Sheldon Margen 10 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 18, 1998 /s/ Kevin J. McNamara ----------------------- Kevin J. McNamara 11 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 17, 1998 /s/ John M. Mount ----------------------- John M. Mount 12 Exhibit 24 POWER OF ATTORNEY ----------------- The undersigned director of OMNICARE, INC. ("Company") hereby appoints EDWARD L. HUTTON, JOEL F. GEMUNDER and CHERYL D. HODGES as his 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, 1997, 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. Dated: March 17, 1998 /s/ D. Walter Robbins, Jr. ------------------------- D. Walter Robbins, Jr.