SAN FRANCISCO--(BUSINESS WIRE)--Aug. 30, 2005--McKesson Corporation (NYSE:MCK), announced today that it has completed its acquisition of D & K Healthcare Resources, Inc. McKesson acquired D&K through a cash tender offer by a wholly owned subsidiary for $14.50 net per share in cash, without interest and subject to required withholding taxes, and the subsequent merger of the wholly owned subsidiary with and into D&K. As a result, D&K has become a wholly owned subsidiary of McKesson. D&K's common stock has been delisted from the Nasdaq National Market, and ceased trading as of the close of business today. About McKesson McKesson Corporation (NYSE:MCK), currently ranked 15 on the Fortune 500, is a healthcare services and information technology company dedicated to helping its customers deliver high-quality healthcare by reducing costs, streamlining processes and improving the quality and safety of patient care. Over the course of its 172-year history, McKesson has grown by providing pharmaceutical and medical-surgical supply management across the spectrum of care; healthcare information technology for hospitals, physicians, homecare and payors; hospital and retail pharmacy automation; and services for manufacturers and payors designed to improve outcomes for patients. For more information, visit us at www.mckesson.com.