Antacid Ultra-Strength Chewable Tablets, Asst Berry Flavors, 72 ct, QC96848 Quality Choice Sale! This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Compare to the Active Ingredients in Tums Ultra. An antacid that relieves heartburn, sour stomach, acid indigestion, and upset stomachs. Gluten-free