This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Emetic, Subject name: Pharmacology
[{'content': 'All are antiemetic except - \nSelect and explain. \nA. Ondansetran, B. Metoclopramide, C. Chlorpromazine, D. Bismuth', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Bismuth Antiemetic drugsAnticholinergics - Hyoscine, Dicyclomine.Ht antihistaminics Promethazine, cyclizine, Cinnarizine, etc.Neuroleptics (D2 blockers) - Chlorpromazine, Haloperidol, Droperidole etc.Prokinetics drugs - Metoclopramide, Domperidone, cisapride, Mosapride, Tegaserod.5-HT3 antagonists - Ondansetron, Granisetron.Adjuvant antiemetics - Dexamethasone, BZDs, Cannabinoids, Clonidine & ephedrine.", 'role': 'assistant'}]