OTC/Lifestyle Pearl of the Day: Generic Acid Controller Indication: Acid controllers relieve heartburn associated with indigestion. Insight: Active ingredients: Famotidine 10 mg Directions: Take 1 tablet by mouth with full glass of water—do not chew. Do not use more than 2 tablets in 24 hours. Storage: Store in 68-77 degrees. Can help prevent heartburn associated with indigestion from certain foods. Source: Walgreens Acid Controller and Acid Reducer Tablets Original Strength | Walgreens