Vaughn-Williams and Singh Classification System
- I: Na+ Channel Blockers
- 1A (i.e procainamide, quinidine)
- 1B (i.e Lidocaine, phenytoin)
- 1C (i.e Flecainide, propafenone)
II: Beta-blockers (i.e Propranolol, acebutolol)
III: K+ Channel blockers (i.e Bretylium, amiodarone)
IV: Ca++ Channel blockers (i.e Verapamil, diltiazem)
V: Miscellaneous (i.e Adenosine, digoxin)