Currently there is one Zantac MDL. It is located in the Southern District of Florida (West Palm Beach). The MDL number is 2924. US District Judge Robin L. Rosenberg is presiding. The defendants include: Boehringer Ingelheim Pharmaceuticals, Inc.; GlaxoSmithKline LLC; Pfizer Inc.; Sanofi-Aventis U.S. LLC; Sanofi US Services Inc.; and Chattem, Inc. There may or be not other MDLs formed against other Zantac manufacturers and distributors. Things are still in early stages.