Table 26135.

Vaughan Williams Classification of Antiarrhythmic Drug Actions

Modified with permission from Vaughn Williams EM. A classification of antiarrhythmic action as reassessed after a decade of new drugs. J Clin Pharmacol 1984;24:129–47, © 1984 by Sage Publications Inc. (95) to include compounds introduced after publication of the original classification.
Type IA
Disopyramide
Procainamide
Quinidine
Type IB
Lidocaine
Mexiletine
Type IC
Flecainide
Moricizine
Propafenone
Type II
Beta-blockers (e.g., propranolol)
Type III
Amiodarone
Bretylium
Dofetilide
Ibutilide
Sotalol
Type IV
Calcium-channel antagonists (e.g., verapamil and diltiazem)