This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Drug of choice in intractable hiccoughs is: \nSelect and explain. \nA. Metoclopramaide, B. Haloperidol, C. Thioridazine, D. Chlorpromazine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Chlorpromazine appears to be the drug of choiceOther agents used are:HaloperidolMetoclopramidePhenytoin, valproic acid, carbamazepine, gabapentinKetamine, lidocaineBaclofenDexamethasoneEdrophoniumAmantadineNifedipineBenzodiazepines to be avoided(ref: KDT 5/e p399, internet)', 'role': 'assistant'}]