<prompt> All of the following are class Ic anti-arrhythmic drugs except?PropafenoneTocainideEnacainideFlecainide  <response>: CLASS I ANTI-ARRHYTHMICS Class Mechanism Drugs Ia Na and K channel blocker Quinidine Procainamide Ib Na channel blocker K channel opener Lignocaine Phenytoin Tocainide Ic Na Channel blocker Enacainide Flecainide Propafenone Tocainide: Class Ib anti-arrhythmic. 