Arrhythmias are divided into bradyarrhythmia and tachyarrhythmia. The drugs for treatment of bradyarrhythmia include atropine, epinephrine, isoproterenol, theophylline, etc. There are several drugs for the treatment of tachyarrhythmia: different types of arrhythmias can be treated with different drugs: supraventricular tachycardia can be treated with amiodarone, propafenone, verapamil, diltiazem and other antiarrhythmic drugs. Sinus tachycardia uses beta blockers, such as betaloc. Rapidly atrial flutter can use propafenone, amiodarone, sotalol and other drugs.