Cordarone is an antiarrhythmic medication. It comes in the form of pink scored tablets usually 200 mg each. Cordarone contains the active ingredient amiodarone hydrochloride, along with some inactive ingredients such as magnesium stearate and lactose. This medication is used to treat life-threatening heart conditions in patients who have already taken another antiarrhythmic medication. It is administered either orally or through an injection.