Antiarrhythmics, Class III

Delay repolarization (phase 3) and thereby increase action potential duration and effective refractory period.
DrugDrug NameDrug Indication
DB00204DofetilideFor the maintenance of normal sinus rhythm (delay in time to recurrence of atrial fibrillation/atrial flutter [AF/AFl]) in patients with atrial fibrillation/atrial flutter of greater than one week duration who have been converted to normal sinus rhythm
DB00308IbutilideIndicated for the rapid conversion of atrial fibrillation or atrial flutter of recent onset to sinus rhythm.
DB01118AmiodaroneIntravenously, for initiation of treatment and prophylaxis of frequently recurring ventricular fibrillation and hemodynamically unstable ventricular tachycardia in patients refractory to other therapy. Orally, for the treatment of life-threatening recurrent ventricular arrhythmias such as recurrent ventricular fibrillation and recurrent hemodynamically unstable ventricular tachycardia.
DB04855DronedaroneManagement of paroxysmal or persistent atrial fibrillation via restoration of normal sinus rhythm.
DB06200TedisamilInvestigated for use/treatment in arrhythmia, atrial fibrillation, and angina.
DB13652BunaftineNot Available
DB01158BretyliumFor use in the prophylaxis and therapy of ventricular fibrillation. Also used in the treatment of life-threatening ventricular arrhythmias, such as ventricular tachycardia, that have failed to respond to adequate doses of a first-line antiarrhythmic agent, such as lidocaine.
DB06217VernakalantIndicated for the rapid conversion of recent onset of atrial fibrillation to sinus rhythm in adults for non-surgery patients that lasts for less than 7 days of duration and post-cardiac surgery patients with atrial fibrillation lasting less than 3 days of duration.
DB04957AzimilideInvestigated for use/treatment in arrhythmia and atrial fibrillation.
DrugDrug NameTargetType
DB00204DofetilidePotassium channel subfamily K member 2target
DB00204DofetilidePotassium voltage-gated channel subfamily H member 2target
DB00204DofetilideATP-sensitive inward rectifier potassium channel 12target
DB00204DofetilideCytochrome P450 3A4enzyme
DB00204DofetilideSolute carrier family 22 member 2transporter
DB00308IbutilidePotassium voltage-gated channel subfamily H member 6target
DB00308IbutilideVoltage-dependent L-type calcium channel subunit beta-1target
DB00308IbutilideVoltage-dependent calcium channel gamma-1 subunittarget
DB00308IbutilideVoltage-dependent calcium channel subunit alpha-2/delta-1target
DB00308IbutilidePotassium voltage-gated channel subfamily H member 2target
DB00308IbutilideVoltage-dependent L-type calcium channel subunit alpha-1Ctarget
DB00308IbutilidePotassium channel subfamily K member 1target
DB00308IbutilidePotassium channel subfamily K member 6target
DB00308IbutilideATP-sensitive inward rectifier potassium channel 11target
DB00308IbutilidePotassium voltage-gated channel subfamily H member 7target
DB01118AmiodaroneBeta-1 adrenergic receptortarget
DB01118AmiodaronePotassium voltage-gated channel subfamily H member 2target
DB01118AmiodaroneCytochrome P450 2C8enzyme
DB01118AmiodaroneCytochrome P450 2C9enzyme
DB01118AmiodaroneCytochrome P450 2D6enzyme
DB01118AmiodaroneVoltage-dependent T-type calcium channel subunit alpha-1Htarget
DB01118AmiodaroneVoltage-dependent calcium channel subunit alpha-2/delta-2target
DB01118AmiodaroneCytochrome P450 3A4enzyme
DB01118AmiodaroneCytochrome P450 1A2enzyme
DB01118AmiodaroneCytochrome P450 3A5enzyme
DB01118AmiodaroneCytochrome P450 3A7enzyme
DB01118AmiodaroneCytochrome P450 1A1enzyme
DB01118AmiodaroneMultidrug resistance protein 1transporter
DB01118AmiodaroneCytochrome P450 2C19enzyme
DB01118AmiodaroneCytochrome P450 2A6enzyme
DB01118AmiodaroneThyroid hormone receptor alphatarget
DB01118AmiodaroneThyroid hormone receptor betatarget
DB01118AmiodaronePeroxisome proliferator-activated receptor gammatarget
DB01118AmiodaroneBile salt export pumptransporter
DB01118AmiodaroneSolute carrier family 22 member 2transporter
DB04855DronedaroneAlpha-1A adrenergic receptortarget
DB04855DronedaroneBeta-1 adrenergic receptortarget
DB04855DronedaroneAlpha-1B adrenergic receptortarget
DB04855DronedaroneAlpha-1D adrenergic receptortarget
DB04855DronedaroneAlpha-2A adrenergic receptortarget
DB04855DronedaroneAlpha-2B adrenergic receptortarget
DB04855DronedaroneAlpha-2C adrenergic receptortarget
DB04855DronedaronePotassium voltage-gated channel subfamily H member 2target
DB04855DronedaroneVoltage-dependent L-type calcium channel subunit alpha-1Ctarget
DB04855DronedaroneVoltage-dependent L-type calcium channel subunit alpha-1Dtarget
DB04855DronedaroneVoltage-dependent L-type calcium channel subunit alpha-1Ftarget
DB04855DronedaroneVoltage-dependent L-type calcium channel subunit alpha-1Starget
DB04855DronedaroneVoltage-dependent L-type calcium channel subunit beta-1target
DB04855DronedaroneVoltage-dependent L-type calcium channel subunit beta-2target
DB04855DronedaroneVoltage-dependent L-type calcium channel subunit beta-3target
DB04855DronedaroneVoltage-dependent L-type calcium channel subunit beta-4target
DB04855DronedaroneCytochrome P450 2D6enzyme
DB04855DronedaroneCytochrome P450 3A4enzyme
DB04855DronedaroneMultidrug resistance protein 1transporter
DB04855DronedaroneSodium channel protein type 1 subunit alphatarget
DB04855DronedaronePotassium channel subfamily K member 2target
DB04855DronedaroneSerum albumincarrier
DB01158BretyliumSodium/potassium-transporting ATPase subunit alpha-1target
DB06217VernakalantCytochrome P450 2D6enzyme
DB06217VernakalantSodium channel protein type 5 subunit alphatarget
DB06217VernakalantPotassium voltage-gated channel subfamily A member 5target
DB06217VernakalantPotassium voltage-gated channel subfamily D member 3target
DB06217VernakalantPotassium voltage-gated channel subfamily H member 2target
DB04957AzimilidePotassium voltage-gated channel subfamily E member 1target
DB04957AzimilidePotassium voltage-gated channel subfamily KQT member 1target
DB04957AzimilidePotassium voltage-gated channel subfamily H member 2target
DB04957AzimilideCytochrome P450 1A1enzyme
DB04957AzimilideCytochrome P450 3A4enzyme
DB04957AzimilideCytochrome P450 3A5enzyme