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: Medicine
[{'content': 'Which of the following drugs is used for painful diabetic neuropathy \nSelect and explain. \nA. Duloxetine, B. Pregabalin, C. Amitriptyline, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer is D (All of the above): Amitriptyline may all be used for treatment of painful diabetic neuropathy. Two agents, Duloxetine and Pregabalin have been approved by the U.S. FDA for pain associated with diabetic neuropathy -', 'role': 'assistant'}]