The correct dosage of Propafenone Tablets is 0.1~0.2g each time, 3~4 times per day, etc. The medication should be used according to the doctor’s prescription. The instruction of Propafenone Tablet points out that this product should be taken orally, 3~4 times a day, 0.1g~0.2g each time.The therapeutic dosage is 0.3~0.9g per day, divided into 4~6 times; the maintenance dosage is 0.3~0.6g per day, divided into 2~4 times. It should be swallowed after meals and not chewed. Propafenone tablets can be used for supraventricular tachycardia and paroxysmal ventricular tachycardia. Adverse reactions include dry mouth, numbness of the tongue and lips, headache, dizziness, nausea, vomiting, constipation, atrioventricular block, and bilious liver injury. It is contraindicated in severe atrioventricular block, sinus node dysfunction, double bundle branch block, cardiogenic shock, severe congestive heart failure, severe hypotension, and hypersensitivity to the drug. It should be used appropriately under medical supervision.