forty patients with chronic ventricular arrhythmias received a single oral dose of the following antiarrhythmic drugs : flecainide 200 mg , propafenone 450 mg , disopyramide 300 mg , mexiletine 400 mg , tocainide 800 mg , verapamil 160 mg , propranolol 120 mg .
C0003195
antiarrhythmic
C0012702
disopyramide