<unk>  (INN, trade names Norpace and Rythmodan) is an antiarrhythmic medication used in the treatment of ventricular tachycardia. It is a sodium channel blocker and therefore classified as a Class 1a anti-arrhythmic agent.<unk>  has a negative inotropic effect on the ventricular myocardium, significantly decreasing the contractility.<unk>  also has an anticholinergic effect on the heart which accounts for many adverse side effects.<unk>  is available in both oral and intravenous forms, and has a low degree of toxicity.
Disopyramide
Pizotifen
Lumasiran
Pilocarpine
Mitratapide
Trospium chloride
Cisapride
Ketotifen