Merck & Co. (MRK) S-3ASR Automatic shelf registration

Exhibit 23(c)

CONSENT OF INDEPENDENT AUDITORS

We consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated February 26, 2009, relating to the combined financial statements of the Merck/Schering-Plough Cholesterol Partnership appearing in the Annual Reports on Form 10-K of Merck & Co., Inc. and Schering-Plough Corporation for the year ended December 31, 2008, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.

/s/ DELOITTE & TOUCHE LLP

Parsippany, New Jersey

December 17, 2009