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H 2 antagonists, sometimes referred to as H2RAs [1] and also called H 2 blockers, are a class of medications that block the action of histamine at the histamine H 2 receptors of the parietal cells in the stomach. This decreases the production of stomach acid. H 2 antagonists can be used in the treatment of dyspepsia, peptic ulcers and ...
H 2 receptor H2 Receptors: Found mainly in the stomach lining (parietal cells), H2 receptors regulate gastric acid secretion by stimulating the production of hydrochloric acid. H2 antagonists (H2 blockers) are used to reduce stomach acid production and treat conditions like gastroesophageal reflux disease (GERD) and peptic ulcers. [3]
The histamine receptor H 2 belongs to the rhodopsin-like family of G protein-coupled receptors. It is an integral membrane protein and stimulates gastric acid secretion. It also regulates gastrointestinal motility and intestinal secretion and is thought to be involved in regulating cell growth and differentiation. [ 6 ]
The H 2 receptor antagonists are a class of drugs used to block the action of histamine on parietal cells in the stomach, decreasing the production of acid by these cells. H 2 antagonists are used in the treatment of dyspepsia, although they have been surpassed in popularity by the more effective [1] proton pump inhibitors.
Pages in category "H2 receptor antagonists" The following 20 pages are in this category, out of 20 total. This list may not reflect recent changes. ...
Cimetidine, sold under the brand name Tagamet among others, is a histamine H 2 receptor antagonist that inhibits stomach acid production. [1] [9] [10] It is mainly used in the treatment of heartburn and peptic ulcers.
H 2-antihistamines, like H 1-antihistamines, exist as inverse agonists and neutral antagonists. They act on H 2 histamine receptors found mainly in the parietal cells of the gastric mucosa, which are part of the endogenous signaling pathway for gastric acid secretion.
Nizatidine is a histamine H 2 receptor antagonist that inhibits stomach acid production, and is commonly used in the treatment of peptic ulcer disease and gastroesophageal reflux disease. [2] It was patented in 1980 and approved for medical use in 1988. [3] [4] It was developed by Eli Lilly.
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