Antiarrhythmic Agents   

Sodium Channel Blockers (Class I)

• Class IA
  • quinidine (Quinidex)
  • procainamide (Pronestyl)
  • disopyramide (Norpace)
• Class IB
  • lidocaine (Xylocaine)
  • tocainide (Tonocard)
  • mexiletine (Mexitil)
• Class IC
  • encainide (Enkaid)
  • flecainide (Tambocor)

Beta-Adrenergic Blockers (Class II)

• propranolol (Inderal)
• Acebutolol (Sectral)
• Esmolol (Brevibloc)
• sotalol (Betapace)

Drugs that Prolong Repolarization (Class III)

• sotalol (Betapace)
• amiodarone (Cordarone)

Calcium Channel Blockers (Class IV)

• verapamil (Calan, Isoptin)
• diltiazem (Cardizem)
• mebefradil (Posicor)

Miscellaneous

• adenosine (Adenocard)
• digoxin (Lanoxin)