Mealey's (March 8, 2022, 11:55 AM EST) -- WASHINGTON, D.C. — Mallinckrodt ARD LLC has agreed to pay $233.7 million to settle a False Claims Act lawsuit that it knowingly underpaid Medicaid rebates that resulted from large price increases for the drug H.P. Acthar Gel (Acthar), the U.S. Justice Department announced in a March 7 press release....