When you have heartburn, TUMS Ultra Strength Assorted Berries chewable antacids have fast-acting, ultra strength relief. Don’t let heartburn keep you from enjoying all of your favorite foods! TUMS antacid tablets relieve heartburn, sour stomach, acid indigestion, and upset stomach associated with these symptoms, so you can have it all, without the worry. Many other heartburn medications are absorbed into the bloodstream and can take hours or days to fully work. TUMS heartburn medicine goes to work in seconds, traveling directly to the source of the heartburn. Once there, it neutralizes acid on contact, so you get the fast heartburn relief you need, exactly when you need it.