Cardiac anti arrhythmic drug classification

Class I (inhibit fast sodium ion channels)

Class IA

Quinidine

Procainamide

Disopyramide

Moricizine

Class IB

Lidocaine

Tocainide

Mexiletine

Class IC

Flecainide

Propafenone

Class II (decrease rate of depolarization)

Esmolol

Propranolol

Acebutolol

Class III (inhibit potassium ion channels)

Amiodarone

Sotalol

Ibutilide

Dofetilide

Bretylium

Class IV (inhibit slow calcium channels)

Verapamil

Diltiazem