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: Medicine
[{'content': 'Retroperitoneal fibrosis is seen with which 5HT1 and 5HT2 receptor antagonist: March 2013 (d) \nSelect and explain. \nA. Ketanserin, B. Cyproheptadine, C. Methysergide, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. Methysergide Impoant side effects of drugs Drug deposited in retina: Chloroquine Drug deposited in muscle: Digoxin Drugs causing hepatitis: Halothane, Rifampin, INH, pyrazinamide Drugs causing intrahepatic cholestasis: Phenothiazines, TCA Hepatotoxins: CC14, Paracetamol Bleomycin and pulmonary changes: Pulmonary fibrosis (stimulation of alveolar macrophages) Drugs causing pulmonary fibrosis: Bleomycin, Busulfan Cardiotoxic drugs: Doxarubicin, Daunorubicin Drugs causing osteoporosis: Glucocoicoids, Heparin Drugs with low safety margin: Lithium, Aminoglycosides, Digoxin Drugs causing hyperuricemia: Pyrazinamide, Ethambutol Drugs causing hirsutism: Minoxidil, Phenytoin Drugs causing extra-pyramidal side effects: Haloperidol, Levodopa In Glucose-6-phosphate deficiency, haemolysis is caused by: Dapsone, - Primaquine, - Sulfonamides etc.', 'role': 'assistant'}]