Betalock and amiodarone can be taken at the same time, mainly used for the treatment of atrial fibrillation, arrhythmia, etc., but need to be strictly under the guidance of a doctor. Betalucil, or metoprolol succinate extended-release tablets, the main ingredient is metoprolol succinate, and the main ingredient of amiodarone is amiodarone hydrochloride, both of which are taken at the same time, and will not produce a drug reaction. Metoprolol succinate extended-release tablets, has the effect of slowing down the heart rate and inhibiting the contractility of the heart. It is mainly used for the prevention and treatment of heart disease, hypertension, myocardial infarction, arrhythmia and so on. It can cause headache, insomnia, bradycardia and other adverse reactions. Contraindicated in patients with sinus bradycardia, sick sinus node syndrome and so on. Use under the supervision of a doctor, start with a small dose and do not stop the drug suddenly. Amiodarone is an antiarrhythmic drug that reduces peripheral resistance and slows the heart rate. It is mainly used for atrial fibrillation, atrioventricular arrhythmia, tachycardia and so on. Amiodarone has more adverse effects, can cause bradycardia, hypotension, etc. It is contraindicated in patients with cardiogenic shock, sick sinus node syndrome, etc. Need to be strictly under the guidance of the doctor to use the drug, not unauthorized changes. During use, heart rate should be monitored at all times to prevent it from slowing down. However, both are not recommended for long-term use. If other adverse reactions occur after use, go to the hospital in time for examination, and use and stop the medication reasonably according to the doctor’s advice.