Mealey's (December 19, 2017, 3:12 PM EST) -- PHILADELPHIA — After nearly 20 years of existence, the diet drug multidistrict litigation, also known as the fen-phen MDL, was quietly closed Oct. 27 (In Re: Diet Drugs [Phentermine/Fenfluramine/Dexfenfluramine] Products Liability Litigation, MDL Docket No. 1203, No. 2:11-md-1203, E.D. Pa.)....