TUMS Smoothies Extra Strength Assorted Fruit chewable antacids have extra strength heartburn relief thatâs so smooth, itâs fast. 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 fast heartburn relief. TUMS Smoothies Extra Strength Assorted Fruit antacids deliver 50 percent more acid neutralizing power than TUMS Regular Strength antacid. Plus, they taste great too, giving you a deliciously smooth, assorted fruit flavor. Itâs no wonder TUMS heartburn medicine is Americaâs number one antacid! Try it today to join the millions of people who have successfully treated their heartburn with TUMS antacid.