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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.
Ball-and-stick model of cimetidine, the prototypical H 2 receptor antagonist. 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.
Use in pregnancy and breastfeeding is of unclear safety. [5] It works by blocking H + /K +-ATPase in the parietal cells of the stomach. [3] Dexlansoprazole was approved for medical use in the United States in 2009. [3] In Canada in 2016, it was the most expensive Proton-pump inhibitor (PPI) available. [4]
Common antacids include aluminum hydroxide/magnesium hydroxide (Maalox) and calcium carbonate (Tums). Histamine H2 blockers and proton pump inhibitors, such as famotidine (Pepcid) and omeprazole (Prilosec), respectively, can also be used to help relieve heartburn, with no known teratogenic effects or congenital malformations. [12]
Proton-pump inhibitors have largely superseded the H 2-receptor antagonists, a group of medications with similar effects but a different mode of action, and heavy use of antacids. [3] A potassium-competitive acid blocker (PCAB) revaprazan was marketed in Korea as an alternative to a PPI.
Effectiveness is similar to other proton pump inhibitors (PPIs). [8] It is taken by mouth. [6] Common side effects include constipation, feeling weak, and throat inflammation. [6] Serious side effects may include osteoporosis, low blood magnesium, Clostridioides difficile infection, and pneumonia. [6] Use in pregnancy and breastfeeding is of ...
Proton pump inhibitors (PPIs) block the gastric hydrogen potassium ATPase (H + /K + ATPase) and inhibit gastric acid secretion. These drugs have emerged as the treatment of choice for acid-related diseases, including gastroesophageal reflux disease (GERD) and peptic ulcer disease. PPIs also can bind to other types of proton pumps such as those ...
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related to: ppi vs h2 blocker pregnancy test kit price philippines list