Taking Propafenone Hydrochloride Tablets is generally not recommended for smoking, and smoking is not recommended in daily life, and the specific use of medication as prescribed by the doctor. Propafenone hydrochloride tablets belong to class Ic antiarrhythmic drugs, suitable for the treatment of paroxysmal ventricular tachycardia and supraventricular tachycardia (including with preexcitation syndrome). The drug should be contraindicated in people who are allergic to the product, in patients with severe hypotension or congestive heart failure, bifascicular block, severe atrioventricular block, cardiogenic shock, sinus node dysfunction without pacemaker protection. Adverse reactions such as dry mouth, numbness of the tongue and lips, headache, dizziness, nausea and vomiting may occur after administration. Smoking is not explicitly prohibited during the medication period, but smoking is not recommended in daily life, regardless of whether the medication is taken or not. Long-term smoking will have an increased risk of cancer and cardiovascular diseases. Specific medication should be under the guidance of a specialist, not unauthorized use of medication.