<prompt> True statement about drugs used in Parkinsonism is:Amantadine is a cholinergic drugVitamin B6 enhances the L-Dopa actionCOMT inhibitors prolong the action of L-dopaNone  <response>: Both entacapone and tolcapone enhance and prolong the therapeutic effect of levodopa-carbidopa in advanced and fluctuating PD Ref KD Tripati 8th ed. 