Antiemetic

Question 1

Ondansetron

Answer 1

5-HT3 receptor antagonist, block 5-HT3 receptors in CTZ, VC AND GI

Question 2

Chlorpromazine+Metoclopramide

Answer 2

dopamine receptor antagonists, block DA receptors in the CTZ, for severe vomiting

Question 3

Scopolamine

Answer 3

anticholinergic agent, for motion sickness, block ACh receptors in inner ear labyrinth

Question 4

Dimenhydrinate

Answer 4

traditional antihistamine, block H1 receptors, for motion sickness, prevent cholinergic stimulation in vestibular areas and can affect muscarinic receptors