Compare to Nexium 24 HR Clear Minis active ingredient. Walgreens Acid Reducer, Esomeprazole Magnesium Delayed-Release Mini Capsules 20 mg, is a clinically-proven heartburn medicine made to treat frequent heartburn that occurs 2 or more days a week. Effective for up to 24 hours. Mini capsules mean big relief. Imagine life without heartburn. Not intended for immediate relief; may take 1 to 4 days for full effect. Active ingredient in each mini capsule: esomeprazole 20 mg, acid reducer. 24 hour night and day relief of frequent heartburn relief with just one mini capsule (may take 1 to 4 days for full effect) Proton Pump Inhibitor: #1 recommended type of OTC acid reducer (of U.S. physicians surveyed by an independent market research firm) Deactivates pumps in the stomach lining to reduce acid production at the source Use as directed for 14 days to treat frequent heartburn that occurs 2 or more days a week in adults age 18 years of age and older 100% satisfaction guaranteed Adults 18 years of age and older: this product is to be used once a day (every 24 hours), every day for 14 days; may take 1 to 4 days for full effect. 14-Day Course of Treatment: swallow 1 capsule with a glass of water before eating in the morning; take every day for 14 days; do not take more than 1 capsule a day; swallow whole. Do not crush or chew capsules; do not use for more than 14 days unless directed by your doctor. Repeated 14-Day Courses (if needed): you may repeat a 14-day course every 4 months; do not take for more than 14 days or more often than every 4 months unless directed by a doctor. Children under 18 years of age: ask a doctor before use. Heartburn in children may sometimes be caused by a serious condition. Treats frequent heartburn (occurs 2 or more days a week); not intended for immediate relief of heartburn; this drug may take 1 to 4 days for full effect. ©Walgreens