TUMS® Antacid Ultra Strength Assorted Fruit. Ultra strength - 1000. Calcium carbonate. Chewable tablets. Uses: Relieves: Heartburn. Acid indigestion. Sour stomach. Upset stomach associated with these symptoms. Gluten-free. Each tablet contains: Elemental calcium 400mg, sodium 2mg. Questions Call: 1-800-897-7535 weekdays. Visit: www.tums.com. ©2014 GSK.