McKesson Announces Preliminary Voting Results from 2014 Annual Stockholder Meeting

All Directors Re-elected, Say on Pay Approved, All Board Vote Recommendations Upheld

SAN FRANCISCO --McKesson Corporation (NYSE: MCK) today announced preliminary voting results from its Annual Meeting of Stockholders held earlier today in Redwood City, California. All Board members were reelected and all Board vote recommendations were upheld.

"We appreciate the support shown by our shareholders today and the thoughtful way many have engaged with us as they carefully considered the proposals presented," said John H. Hammergren, chairman and chief executive officer, McKesson. "This year's proxy vote provided another opportunity for us to hear from shareholders and we are committed to responding to their feedback while remaining focused on delivering significant long-term value for our investors."

The shareholder vote announced today is considered preliminary until the final results are tabulated and certified by the independent inspector of election. The final results will be reported on a Form 8-K that will be filed with the Securities and Exchange Commission shortly.

About McKesson Corporation

McKesson Corporation, currently ranked 15th on the FORTUNE 500, is a healthcare services and information technology company dedicated to making the business of healthcare run better. We partner with payers, hospitals, physician offices, pharmacies, pharmaceutical companies and others across the spectrum of care to build healthier organizations that deliver better care to patients in every setting. McKesson helps its customers improve their financial, operational, and clinical performance with solutions that include pharmaceutical and medical-surgical supply management, healthcare information technology, and business and clinical services. For more information, visit us at www.mckesson.com.

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