Receptor
Location
Drugs
Dopamine
(D2)
(D2)
- Chemoreceptor trigger zone
- Higher cortical centres
- Prochlorperazine
- Droperidol
- Haloperidol
- Metoclopramide
Serotonin
(5HT3 & 5HT4)
(5HT3 & 5HT4)
- Gastrointestinal tract
- Chemoreceptor trigger zone
- Higher cortical centres
- Ondansetron
- Granisetron
Histamine
(H1)
(H1)
- Vestibular apparatus
- Vomiting centre
- Cyclizine
- Promethazine
Neurokinin-1
(NK1)
(NK1)
- Gastrointestinal tract
- Nucleus tractus solitarus
- Vestibular apparatus
- Aprepitant
- Fosaprepitant
- Casopitant
Muscarinic Acetylcholine
(M3)
(M3)
- Gastrointestinal tract
- Vomiting centre
- Scopolamine (Hyoscine)
Noradrenaline
(NA)
(NA)
- Gastrointestinal tract
-
Opioid receptors
- Chemoreceptor trigger zones
-
Enkephalin
(ENK)
(ENK)
- Higher cortical centres
-