Sanofi US is part of a leading global healthcare company that discovers, develops, produces and markets innovative therapies to help protect health and enhance people's lives; part of Sanofi, Tennessee?based Chattem Inc. is dedicated to consumer healthcare, marketing a wide range of over?the?counter (OTC) and consumer health products including the venerable Rolaids? brand. Invented in the late 1920s, the popular antacid with the active ingredients of calcium carbonate and magnesium hydroxide is known for its commercial featuring the tagline "How do you spell relief?" "R?O?L?A?I?D?S." Today the brand encompasses a range of antacids including extra strength chewable antacid tablets designed for the relief of heartburn, sour stomach and indigestion; regular strength chewable antacid tablets; ultra strength liquid antacid relief; extra strength antacid/dietary supplement tablets; ultra strength antacid tablets and more.