Moracizine (INN, or moricizine, trade name Ethmozine) is an antiarrhythmic of class IC. It was used for the prophylaxis and treatment of serious and life-threatening ventricular arrhythmias, but was withdrawn in 2007 for commercial reasons. ==Pharmacology== Moracizine, a phenothiazine derivative, undergoes extensive first-pass metabolism and is al...