Mealey's (November 6, 2019, 11:53 AM EST) -- BRIDGEWATER, N.J. — Sanofi-Aventis U.S. LLC on Oct. 18 announced a voluntary recall of its Zantac over-the-counter (OTC) heartburn drug due to possible contamination with N-nitrosodimethylamine (NDMA), a possible carcinogen....