What is the action of antiemetics,such as ondansetron and granisetron? A) They block the effects of 5-HT serotonin. B) They block the effects of histamine 2 (H₂). C) They stimulate the effects of acetylcholine. D) They stimulate the effects of dopamine (D₂).

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Quizplus · Accepted Answer

Ondansetron and granisetron are both 5-HT3 receptor antagonists, meaning they block the effects of serotonin on these receptors. This leads to a reduction in nausea and vomiting, which are often caused by excessive serotonin release in certain areas of the brain.

What Is the Action of Antiemetics,such as Ondansetron and Granisetron