What are u2 inhibators?

What are h2 inhibitors and what are their brand names?

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Both PPIs and H2 blockers suppress gastric acid secretion, but at different stages of production. While histamine blockers block one of the first stimuli for acid production, PPIs block the final step in the pathway of acid secretion in the stomach, resulting in greater suppression of acid. PPIs shut down the proton pumps in the stomach; H2 blockers work by blocking the histamine receptors in acid producing cells in the stomach. PPIs have a delayed onset of action, while H2 blockers begin working within an hour. PPIs work for a longer period of time: Most work up to 24 hours and their effects may last up to three days. H2 blockers, however, usually only work up to 12 hours.


Types of H2 Inhibitors-

Zantac (ranitidine)
Pepcid (famotidine)
Tagamet (cimetidine)
Axid (nizatidine)