The United States filed a complaint under the False Claims Act against Mallinckrodt ARD LLC, formerly known as Mallinckrodt ARD Inc. and previously Questcor Pharmaceuticals Inc. (collectively, Mallinckrodt), in the U.S. District Court for the District of Massachusetts, the Department of Justice announced today. The government alleges that Mallinckrodt has violated the False Claims Act by knowingly underpaying Medicaid rebates due as a result of large increases in the price of its drug H.P. Acthar Gel (Acthar). “The Medicaid Rebate Statute provides an important check on rising drug prices,†said Assistant Attorney General Jody Hunt of the Department of Justice’s...