This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sedative-Hypnotics and Parkinsonism, Subject name: Pharmacology
[{'content': 'Peripheral vasospasm is adverse effect of which drug? \nSelect and explain. \nA. Ropinirole, B. Levodopa, C. Bromocriptine, D. Pramipexole', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Bromocriptine and pergolide are ergot derivatives and dopamine agonists These are known to cause vasoconstriction and thus gangrene S/E of Pergolide : Valvular hea disease Pramipexole and ropinirole are also dopamine agonists but these are non-ergot derivatives. These do not cause gangrene and are longer acting. S/E of Ropinirole : Nausea, dizziness, hallucinations,postural hypotension.', 'role': 'assistant'}]