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H2 Blockers

By , About.com Guide

Updated September 11, 2007

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Definition:

Medicines that reduce the amount of acid the stomach produces. They block histamine2 (HIH-stuh-min-too). Histamine signals the stomach to make acid. Prescription H2-blockers are Tagamet (cimetidine), Pepcid (famotidine), Axid (nizatidine), and Zantac (ranitidine). 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.

Pronunciation: aytch-too BLAH-kurz
Also Known As: Histamine (H2) Receptor Antagonists
Examples:
Tagamet is in a class of medications called H2 blockers.
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