Compare to the active ingredients of Pepcid Complete. Equate Dual-Action Acid Reducer Complete Mint Chewable Tablets contains an acid reducer plus two antacids: famotidine 10 mg, calcium carbonate 800 mg, and magnesium hydroxide 165 mg. Use this heartburn medicine to relieve heartburn associated with acid indigestion and sour stomach. Here is your acid reducer with antacids in a gluten free chewable mint tablet for adults and children 12 years and over. No water needed, so this remedy is ideal for people who are on the go. Digestive discomfort from heartburn, acid indigestion, sour stomach, acid reflux? Take action -- dual action -- to fend off heartburn symptoms.