Metoprolol tartrate tablets have the same composition, due to differences in the drug production process and so on resulting in efficacy may be slightly different, there is no where out of the effect of good data support. Metoprolol tartrate tablets are used in the treatment of hypertension, angina pectoris, myocardial infarction, hypertrophic cardiomyopathy, aortic coarctation, arrhythmia, hyperthyroidism, heart failure, cardiac neurosis. It reduces the effects of catecholamines associated with physiological and psychological load, lowers heart rate, cardiac output and blood pressure, and may vary slightly from manufacturer to manufacturer. Adverse effects such as fatigue, headache, dizziness, extremity chills, bradycardia, palpitations, abdominal pain, nausea, vomiting, diarrhea, constipation, chest pain, temporary worsening of heart failure, prolongation of atrioventricular conduction time, memory impairment, confusion, hallucinations, etc., may be experienced after use. It is contraindicated in patients with cardiogenic shock, sick sinus node syndrome, unstable and decompensated heart failure, symptomatic bradycardia or hypotension, hypersensitivity to the product, pregnant and lactating women. Patients who want to use metoprolol tartrate tablets are recommended to go to a regular hospital, cooperate with the doctor to complete the relevant examinations, and avoid blind use of drugs.