Randomized, Placebo-Controlled Study of Tolcapone in Patients With Fluctuating Parkinson Disease Treated With Levodopa-Carbidopa

Abstract
TOLCAPONE (3,4-dihydrox-4‘-methyl-5-nitrobenzo-phenone) is a selective and reversible catechol-O-methyltransferase inhibitor1 that is being developed as adjunctive therapy to levodopa plus a peripheral dopa decarboxylase inhibitor (benserazide or carbidopa) in the treatment of Parkinson disease.