Metoprolol succinate extended-release tablets can lower blood pressure, control ventricular rate and other effects, mainly used in the treatment of hypertension, angina pectoris, hyperthyroidism and other diseases. 1. Metoprolol succinate extended-release tablets are β1-blockers, which can control the ventricular rate, reduce myocardial oxygen consumption, thereby reducing cardiac output, and can also relieve the symptoms of thyrotoxicosis. 2. It can be used to treat hypertension, angina pectoris, myocardial infarction, arrhythmia, hyperthyroidism, aortic coarctation and other diseases. 3. Adverse reactions such as abdominal pain, nausea, bradycardia, dizziness, bronchospasm may occur during administration. For drug components allergy, cardiogenic shock, II, III degree atrioventricular block, severe heart failure and other conditions are prohibited, it is recommended that under the guidance of a doctor for medication and treatment, comply with the doctor’s instructions standardized treatment.