Get fast relief with Equate Extra Strength Super Chew Antacid Chews. Made with calcium carbonate, they help provide relief from acid indigestion, sour stomach, and heartburn. These calcium carbonate chews have a fruity flavor that makes them easy to get down. Each chewable tablet contains 300 mg of calcium and 1 mg of magnesium. These antacid chews contain soy so do not consume if you are sensitive to soy. This bottle contains 120 pieces of assorted fruit-flavored chews. Compare the active ingredient in our product to the active ingredient found in Alka Seltzer Relief Chews. Get the relief you need with Equate Extra Strength Super Chew Antacid Chews. Making the right health decisions can be challenging. With a complete range of products and simple solutions, Equate allows you to take care of your family with confidence.