Pepcid (famotidine) is a histamine-2 blocker that works by decreasing the amount of acid the stomach produces.
Pepcid is used to treat and prevent ulcers in the stomach and intestines. It also treats conditions in which the stomach produces too much acid, such as Zollinger-Ellison syndrome.
Pepcid also treats gastroesophageal reflux disease (GERD) and other conditions in which acid backs up from the stomach into the esophagus, causing heartburn.
