This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'All are antiemetics except - \nSelect and explain. \nA. Domperidone, B. Ondensetron, C. Phenazocine, D. Cyclizine', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is `c' i.e., Phenazocine Antiemetic drugs 1. Anticholinergics --> Hyoscine, Dicyclomine. 2. H, antihistaminics --> Promethazine, cyclizine, Cinnarizine, etc. 3. Neuroleptics (D2 blockers) -* Chlorpromazine, Haloperidol, Droperidole etc. 4. Prokinetics drugs --> Metoclopramide, Domperidone, cisapride, Mosapride, Tegaserod. 5. 5-HT3 antagonists --> Ondansetron, Granisetron. Adjuvant antiemetics --> Dexamethasone, BZDs, Cannabinoids, Clonidine & ephedrine.", 'role': 'assistant'}]