The generic name of Cardioplegia is Propafenone Hydrochloride Tablets and its side effects and hazards include dry mouth, numbness of tongue and lips, headache and dizziness. The medication should be used as prescribed by the doctor. Propafenone Hydrochloride Tablet is an antiarrhythmic drug that also has some antihypertensive and heart rate slowing effects. Possible side effects and hazards of the drug include dry mouth, numbness of tongue and lips, headache, dizziness, nausea, vomiting, constipation, cholestatic liver injury, and prolongation of Q-T interval. The occurrence of the above side effects is related to individual factors. This drug is contraindicated in severe atrioventricular block, severe heart failure, severe hypotension, cardiogenic shock, allergy, etc. It should be used with caution in persons with severe myocardial damage, severe bradycardia, severe hepatic and renal insufficiency. This drug must be used under the guidance of a physician, if any adverse reactions occur after the use of the drug need to stop the drug in time to seek medical attention.