100-count of Maximum Strength Pepcid AC All-Day Indigestion Relief Tablets for the prevention and relief of heartburn Just 1 tablet controls acid all day & all night (based on 9-hour acid control studies during the day and 12-hour acid control studies during the night) Specially formulated with 20 milligrams of famotidine, a known acid reducer for maximum strength aid in the relief and prevention of acid indigestion This acid neutralizing medicine can be taken as early as 60 minutes prior to eating or, for fast-acting prevention, in as little as 10 minutes before consuming food and beverages that contribute to heartburn Keep a package of the acid indigestion relief tablets at home and in the office to relieve heartburn whenever it strikes