EX-23.1 2 exhibit231.htm CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Exhibit 23.1


Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-181118, and 333-84806 of McKesson Corporation, each on Form S-8, of our report dated September 20, 2012, relating to the financial statements and financial statement schedule of the McKesson Corporation Profit-Sharing Investment Plan appearing in this Annual Report on Form 11-K of the McKesson Corporation Profit-Sharing Investment Plan for the year ended March 31, 2012.

/s/ Deloitte & Touche LLP

San Francisco, CA
September 20, 2012