Mechanism of action
It is a competitive H2 receptor antagonist. It acts to markedly decrease acid output by completely inhibiting histamine induced gastric acid secretion.
Famotidine is used to treat stomach ulcers (gastric and duodenal), erosive esophagitis (heartburn or acid indigestion), and gastroesophageal reflux disease (GERD). GERD is a condition where the acid in the stomach washes back up into the esophagus.
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