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: Pharmacology
[{'content': 'Which of the following is a P-glycoprotein inhibitor \nSelect and explain. \nA. Rifampicin, B. Phenytoin, C. Griseofulvin, D. Ketoconazole', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Drugs like Cyclosporine, Tacrolimus, Quinidine, Diltiazem, Verapamil, Itraconazole, Ketoconazole, Amiodarone inhibit P-glycoprotein and cause drug toxicity.', 'role': 'assistant'}]