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: Psychiatry
[{'content': 'Drug not used in prophylaxis of bipolar disorder ? \nSelect and explain. \nA. Haloperidol, B. Lithium, C. Carbamazepine, D. Valproate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. HaloperidolProphylactic treatment for bipolar disorder:Lithium (drug of choice)CarbamazepineValproateOther drugs which can be used are topiramate, Lamotrigine, atypical antipsychotics (apiprazale, olanzapine,quetiapine, risperidone, Clozapine) and Gabapentin.', 'role': 'assistant'}]