Anti emetic drug
1. H1 antagonist
e.g. diphenhydramine , dimenhydrinate , meclizine
uses: motion sickness and vertigo
adverse effect: atropine like effect
2. anticholinergic
e.g. Hyoscine
action: block M receptors
uses: motion sickness and vertigo
adverse effect: atropine like effect
3. Serotonin (5HT3) antagonist
e.g. ondasetron , granisetron , dolasetron
action: block 5HT3 receptors
uses: chemically induced vomiting
adverse effect: atropine like effect
4. Dopamine (D2)antagonist
e.g. metoclopramide , domperidone
action: block D2 , 5HT3 receptors
uses: chemically induced vomiting
vomiting of pregnancy
adverse effect: hyperprolactinemia
5. Vitamin B6
Action: regulate of GABA/glutamate balance
Uses: (D.O.C) vomiting of pregnancy
adverse effect: dry mouth, sedation