This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
[{'content': 'Which of the following is a metabolite of carisoprodol \nSelect and explain. \nA. Meprobamate, B. Doxylamine, C. Dimethadione, D. Amphetamine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Refer Goodman Gilman 11/e p422 Meprobamate was used as a CNS depressant drug but is rarely indicated now due to its addictive propeies. It is a metabolite of carisoprodol, which is used as a centrally acting skeletal muscle relaxant', 'role': 'assistant'}]