Indications are used for various tachyarrhythmia. Including ① atrial and ventricular premature beats; ② atrial fibrillation, supraventricular tachycardia and ventricular tachycardia; ③ Preexcitation syndrome. Indications are broad-spectrum antiarrhythmic drugs. Its effect is similar to quinidine, but its strength and toxicity are less. It is mainly used for ventricular arrhythmia, such as ventricular premature beats and ventricular tachycardia, especially for ventricular arrhythmia caused by acute myocardial infarction, and can also be used for cardioversion. Indications Propyramide is a broad-spectrum antiarrhythmic drug, which can be used to treat various supraventricular or ventricular arrhythmias, especially to prevent the recurrence of atrial fibrillation after cardioversion and arrhythmia after myocardial infarction. It can be used for reversing and preventing ventricular tachyarrhythmia, such as myocardial infarction, cardiac glycoside poisoning and ventricular premature beats, ventricular tachycardia, ventricular flutter and ventricular fibrillation caused by surgery. In addition, there are many other drugs used for arrhythmia, such as mexiletine, propafenone, verapamil and amiodarone. Because of different indications, even if you have arrhythmia, you should follow the doctor's advice and don't take medicine indiscriminately.