(Reuters) - Pharmacy benefit managers Express Scripts Inc (ESRX.O) and Medco Health Solutions Inc MHS.N have supplied more information requested by U.S. antitrust regulators in connection with their pending $29 billion merger, Medco said on Monday.
The companies complied with a so-called "second request" for information from the Federal Trade Commission, Medco said in a securities filing. Such a second request for information is frequently made when potential competitive issues exist on a deal.
Express Scripts is seeking to acquire rival Medco to become easily the biggest U.S. company in managing prescription benefits, but the deal has drawn significant antitrust scrutiny. The companies still expect the deal will be completed in the first half of the year, Medco said.
(Reporting By Lewis Krauskopf; Editing by Gerald E. McCormick)