Which of the following medications used in the treatment of peptic ulcers and gastroesophageal reflux binds to H2 receptors and blocks the action of histamine on parietal cells?
A)
Cimetidine (Tagamet)
B)
Levbid (hyoscyamine)
C)
Lotronex (alosetron)
D)
Nexium (esomeprazole)
Ans:
A
Feedback:
Cimetidine is a H2 receptor blocker used to treat peptic ulcers and GERD. It binds to H2 receptors and blocks the action of histamine on parietal cells. Levbid and Lotronex are anticholinergics, while Nexium is a proton pump inhibitor that inhibits gastric acid secretion.
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