This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Renal stones are seen as a complication by using the following drug \nSelect and explain. \nA. Tiagabine, B. Oxacarbamazepine, C. Zonisamide, D. Phenytoin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Side effects of zonisamide are metabolic acidosis, renal stones, somnolence, dizziness, headache, irritability and anorexia. REF; KD TRIPATHI 8TH ED.', 'role': 'assistant'}]