This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
Entacapone used in parkinsonism is: 
Select and explain. 
A. Dopamine agonist, B. MAO inhibitor, C. COMT inhibitor, D. Dopa decarboxylase inhibitor
C: COMT inhibitor
Answer: C: COMT inhibitor 
Explanation: Ans. C. COMT inhibitorAmong the following drugs, ropinirole and pramipexole is dopamine agonist. Selegiline and rasagiline is MAO inhibitor. Entacapone and tolcapone is COMT inhibitor and carbidopa is dopamine decarboxylase inhibitor.