Drug Strengths: Injection Amiodarone 150mg/3ml and 100mg/20ml VialPhysical Form: Injection LiquidFunction: Antiarrhythmic. It is an antiarrhythmic medication used to treat and prevent a number of types of irregular heartbeats including ventricular tachycardia (VT), ventricular fibrillation (VF), and wide complex tachycardia, as well as atrial fibrillation and paroxysmal supraventricular tachycardia.