This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'Nilutamide is an: \nSelect and explain. \nA. Anti-convulsant, B. Anti-androgen, C. Anti-progestin, D. Anti-oestrogen', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Antiandrogen -Flutamide and bicalutamide, nilutamide antagonise androgen action on prostate carcinoma and have a palliative effect in advanced/metastatic cases. Because they increase androgen levels, combination with orchiectomy or GnRH analogs is required to produce a full therapeutic effect. (REF. Essentials of Pharmacology TD TRIPATHI 6th EDITION page no 828)', 'role': 'assistant'}]