Propafenone tablets, or propafenone hydrochloride tablets, are usually harmless when taken in small doses daily as prescribed by the doctor, but some patients may experience adverse reactions such as headache, numbness of the tongue and lips. If the drug is overdosed, it is harmful to the body, with bradycardia, metabolic acidosis and other manifestations. Propafenone hydrochloride tablets are an anti-arrhythmic drug. In general, taking a small dose of Propafenone Hydrochloride Tablets every day is harmless, provided that the drug is taken strictly under the guidance of a doctor, which can effectively treat the disease and relieve clinical symptoms. However, some patients may experience adverse reactions such as headache, numbness of the tongue and lips, loss of appetite, vomiting, diarrhea, and bloating during the administration of the drug. Usually, the symptoms of adverse reactions are mild, and some patients disappear on their own after stopping the drug. If the drug is taken in excess, it is harmful to the body and prone to bradycardia, metabolic acidosis, pulmonary edema, atrioventricular block and other manifestations. To summarize, patients must follow the doctor’s instructions to take propafenone hydrochloride tablets, do not increase or decrease the dosage by yourself, and follow up the consultation on time during the use of the drug.