Famotidine is in a group of drugs called histamine-2 blockers. Famotidine works by decreasing
the amount of acid the stomach produces.
Famotidine 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.
Famotidine also treats gastroesophageal reflux disease (GERD) and other conditions in which acid
backs up from the stomach into the esophagus, causing heartburn.
Famotidine may also be used for other purposes not listed in this medication guide.