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 drug causes osteoporosis on long-term use \nSelect and explain. \nA. Estrogen, B. Progesterone, C. GnRH analogues, D. Warfarin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., GnRH analogues Drugs causing osteoporosis : o Glucocoicoids o Cytotoxic drugs o Excessive alcohol intake o Excessive thyroxine o Heparin o Cyclosporine o Anticonvulsants o Aluminum o GnRH agonist o Lithium", 'role': 'assistant'}]