Learn about Cordarone tablets, their uses, benefits, dosages, and side effects. Understand how this antiarrhythmic medication manages serious arrhythmias. Cordarone X 200 MG Tablet is an antiarrhythmic medicine that is used to maintain normal heartbeats in patients with serious, life-threatening ventricular arrhythmias (rhythm disorders of the ventricles; the lower chambers of the heart). Amiodarone (Cordarone) is an antiarrhythmic medication used to treat ventricular tachycardia or ventricular fibrillation. Includes amiodarone side effects, interactions and indications. Maintenance Too high a dose during maintenance therapy can cause side effects which are believed to be related to high tissue levels of amiodarone and its metabolites. Amiodarone is strongly protein bound and has an average plasma half life of 50 days (reported range 20-100 days). It follows that sufficient time must be allowed for a new distribution equilibrium to be achieved between adjustments of dosage. In patients with potentially lethal arrhythmias the long half life is a valuable ...