Propafenone Hydrochloride Tablets are effective in the treatment of symptomatic supraventricular tachycardia, including atrioventricular junctional tachycardia, WPW syndrome combined with supraventricular tachycardia, and paroxysmal atrial fibrillation; and ventricular tachycardia that, in the judgment of a physician, requires treatment or is fatal. Adverse reactions such as dizziness, palpitations, cardiac conduction abnormalities, anxiety, sleep disturbances, headache, abnormal taste, blurred vision, dyspnea, nausea and vomiting, abdominal pain and diarrhea, dry mouth and constipation, chest pain, fatigue, fever, liver function abnormalities, atrial flutter, tachycardia or bradycardia, and loss of appetite may occur with administration of propafenone hydrochloride tablets. It is contraindicated in patients who are allergic to the ingredients of Propafenone Hydrochloride Tablets, those who suffer from Brugada syndrome, those who have obvious heart failure, those who suffer from cardiogenic shock, those who have severe symptoms of bradycardia, those who suffer from myocardial infarction or impaired cardiac output without life-threatening conditions, those who suffer from severe hypotension and airway obstruction, those who suffer from electrolyte disorders and those who suffer from myasthenia gravis. Propafenone Hydrochloride Tablets should not be taken at the same time with ritonavir, if you need to use Propafenone Hydrochloride Tablets, please consult a professional doctor, follow the doctor’s instructions, and use the drug reasonably.