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Exhibit 21
SUBSIDIARIES OF THE REGISTRANT

There is no parent of the Company. The following is a listing of the significant subsidiaries of the Company.
JURISDICTION
OF
ORGANIZATION
McKesson Europe Services GmbHGermany
McKesson International IP2A LimitedMalta
McKesson International IP5A LimitedMalta
Northstar International Holdings LimitedMalta
McKesson Medical-Surgical Supply Chain Services LLCUnited States
McKesson Medical-Surgical Holdings, Inc.
United States
McKesson Medical-Surgical Minnesota Supply Inc.United States
McKesson Medical-Surgical Top Holdings, Inc.United States
McKesson Plasma and Biologics LLCUnited States
McKesson Sourcing Services Inc.United States
McKesson Specialty Care Distribution LLCUnited States
McKesson US Finance CorporationUnited States
McKesson UK Finance I LimitedUnited Kingdom