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': "Antithyroid drugs are indicated in the following conditions except: \nSelect and explain. \nA. Grave's disease, B. Toxic nodular goiter, C. Along with radioactive iodine, D. Prophylaxis of endemic goitre", 'role': 'user'}, {'content': "Answer: D \nExplanation: Antithyroid drugs either reduce the synthesis and/or the release of thyroid hormones; hence they are\xa0useful in the management of hyperthyroidism states like Grave's disease and toxic nodular goiter.\nPatients must be rendered euthyroid prior to subtotal thyroidectomy and antithyroid drugs can do\xa0 that. Endemic non-toxic goiter is due to deﬁciency of iodine, deﬁcient synthesis of hormones and\xa0 goiter, which needs treatment with thyroxine. They are used to control symptoms of hyperthyroidism\xa0till the eﬀects of radioactive iodine develop.", 'role': 'assistant'}]