Definitions for "H2-blockers"
Drugs that block the release of digestive juices in the stomach, by blocking the receptors (called H2-receptors) that are involved in this process.
Medicines that reduce the amount of acid the stomach produces. They block histamine. Histamine signals the stomach to produce acid. Prescription H2-blockers are cimetidine (Tagamet), famotidine (Pepcid), nizatidine (Axid) and ranitidine (Zantac). They are used to treat ulcer symptoms. Nonprescription H2-blockers are Zantac 75, Axid AR, Pepcid-AC and Tagamet-HB. They are for GERD, heartburn and acid indigestion.
Chemicals that block the activity of histamine, which is a powerful stimulator of gastric acid production. Ranitidine (ZantacĀ®) is a well known H2-blocker.