ACTIVE INGREDIENT, each mini capsule is esomeprazole 20 mg, acid reducer; each delayed-release mini capsule corresponds to 22 mg esomeprazole magnesium dihydrate; compare to the active ingredient in Nexium 24 HR Clear Minis ACID REDUCER: Esomeprazole magnesium deactivates acid-producing pumps in the stomach lining; inhibits acid production at the source; may take 1 to 4 days for full effect, not intended for immediate relief PROVEN HEARTBURN TREATMENT: Clinically proven to treat frequent heartburn that occurs 2 or more days a week; one dose per day; 14-day course of treatment. 24 HOUR MINI CAPSULES: Mini capsules, smaller size than regular sized Amazon Basic Care Esomeprazole Magnesium Delayed-Release Capsules, 20 mg, Acid Reducer AMAZON BASIC CARE ESOMEPRAZOLE MAGNESIUM DELAYED-RELEASE MINI CAPSULES 20 mg: Treats frequent heartburn in adults age 18 years of age and older; gluten free