This Corporate Citizenship Report details McKesson's corporate citizenship efforts during Fiscal Years 2008-2009 (April 1, 2007 – March 31, 2009). It covers activity in all McKesson’s business units, as described on page three of our Form 10-K that operate within the United States, except where noted. In addition to the information contained within this report, we have provided links to useful information found on our company website and in our past Corporate Citizenship Report.

About This Report

The Global Reporting Initiative (GRI) G3 Guidelines, internationally recognized sustainability and social responsibility reporting standards, help frame the information within this report. A full list of GRI indicators and McKesson's reporting on these indicators is available in our GRI Index. McKesson declares this Report to GRI application level C.

We publish a Corporate Citizenship Report biennially; our last report was released in Fall 2007. In order to reduce paper and energy use, the current report was published online only.

In an effort to foster ongoing dialogue with our stakeholders, we invite thoughts and comments on the Corporate Citizenship Report as well as the information presented within. Please contact corporate.citizenship@mckesson.com should you have any questions or concerns.