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.