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Antiarrhythmic drug

Hospital San Carlos, Madrid · FDA-approved active Small molecule

Antiarrhythmic drugs suppress abnormal electrical activity in the heart to restore normal heart rhythm.

Antiarrhythmic drugs suppress abnormal electrical activity in the heart to restore normal heart rhythm. Used for Atrial fibrillation, Ventricular arrhythmias, Supraventricular tachycardia.

At a glance

Generic nameAntiarrhythmic drug
Also known asClass I or III, Statin Therapy, Anticoagulants, Amiodarone, Sotalol, medical treatment of atrial flutter
SponsorHospital San Carlos, Madrid
Drug classAntiarrhythmic agent
ModalitySmall molecule
Therapeutic areaCardiovascular
PhaseFDA-approved

Mechanism of action

Antiarrhythmics work through various mechanisms depending on their class: some block sodium channels (Class I), others block beta-adrenergic receptors (Class II), some prolong repolarization (Class III), and others block calcium channels (Class IV). By modulating cardiac electrical conduction and refractoriness, these drugs prevent or terminate arrhythmias and maintain normal sinus rhythm.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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