The Commission authorized staff to file separate motions in federal district court to block the mergers of the nation's four largest drug wholesalers into two wholesale distributors of pharmaceutical products. The Commission charged that Cardinal 's proposed acquisition of Bergen Brunswig Corporation and McKesson Corporation's proposed acquisition of AmeriSource Health Corp. would substantially reduce competition in the market for prescription drug wholesaling and lead to higher prices and a reduction in services to the companies' customers --hospitals, nursing homes and drugstores --and eventually to consumers. Two separate motions for preliminary injunctions were filed in the U.S. District Court for the District of Columbia March 6, 1998. On July 31, 1998, the District Court granted the Commission's motions enjoining both proposed mergers. The parties abandoned their respective merger plans soon after the decision.