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Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S‑8 (333-77845, 333-95949, 333-36874, 333-120450 and 333-196208) and Form S-3 (333-199863) of Omnicare, Inc. of our report dated February 25, 2015 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10‑K.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Cincinnati, Ohio

February 25, 2015