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
Drug of choice in intractable hiccoughs is: 
Select and explain. 
A. Metoclopramaide, B. Haloperidol, C. Thioridazine, D. Chlorpromazine
D: Chlorpromazine
Answer: D: Chlorpromazine 
Explanation: 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)