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: Gynaecology & Obstetrics
[{'content': 'The characteristic problem in females taking nor-ethisterone is \nSelect and explain. \nA. Irregular bleeding, B. Thromboembolism, C. Hirsutism, D. Weight gain', 'role': 'user'}, {'content': "Answer: A \nExplanation: Norethisterone acetate is commonly used as an injectable steroid - 'NET-EN'\nIt is a progesterone based contraceptive like DMPA and its side effect are similar to those of DMPA.\nThe most frequent side effect is irregular bleeding.\nNET-EN is given in doses of 200 mg at 2 monthly intervals.\n\nExtra Edge: Combined injectable contraceptive.", 'role': 'assistant'}]