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': 'Which of the following drug  is associated with the lowest risk of causing extra pyramidal side effects? \nSelect and explain. \nA. Chlorpromazine, B. Thioridazone, C. Haloperidol, D. Fluphenthixol', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In general all typical antipsychotics cause extra pyramidal side effects as they block dopaminergic activity and lead to unopposed increase in cholinergic activity. But Thioridazone possesses\xa0anticholinergic action and hence carries\xa0least risk of causing EPS. If the options included any atypical antipsychotic (Clozapine ,Olanzapine), then that would be the right answer as atypical antipsychotics has lower risk of causing EPS then all typical antipsychotics.', 'role': 'assistant'}]