True statement about drugs used in Parkinsonism is:: (A) Amantadine is a cholinergic drug, (B) Vitamin B6 enhances the L-Dopa action, (C) COMT inhibitors prolong the action of L'-dopa, (D) None
Answer is C. Both entacapone and tolcapone enhance and prolong the therapeutic effect of levodopa-carbidopa in advanced and fluctuating PD Ref KD Tripati 8th ed.