Class | Mechanism | Examples |
---|---|---|
Ia | Na+ channel block (moderate) |
•Quinidine •Ajmaline •Procainamide •Disopyramide |
Ib | Na+ channel block (weak) |
•Lidocaine •Phenytoin •Mexiletine •Tocainide |
Ic | Na+ channel block (strong) |
•Flecainide •Propafenone •Encainide •Moricizine |
II | Beta-blocker |
•Propranolol •Carvedilol •Esmolol •Timolol •Metoprolol •Atenolol •Bisoprolol •Nebivolol |
III | K+ channel blocker |
•Amiodarone •Dronedarone •Sotalol •Ibutilide •Dofetilide •Vernakalant |
IV | Ca2+ channel blocker |
•Verapamil •Diltiazem |
V | Variable |
•Adenosine •Digoxin •Magnesium sulphate |