The generic name of Betalucel is Metoprolol Tartrate, and its adverse effects mainly include hypotension, bradycardia, and interference with glucose metabolism. 1. Hypotension: Metoprolol tartrate has a selective blocking effect on β1-receptors, weakening myocardial contractility, reducing cardiac output and thus lowering blood pressure, which can result in hypotension if taken in larger amounts. 2. Bradycardia: Metoprolol tartrate can block sympathetic β-receptors, has the effect of slowing down the heart rate, if the basal heart rate is too low, can cause bradycardia after taking the adverse reactions. 3. Interference with glucose metabolism: Metoprolol tartrate can inhibit insulin secretion by blocking β-receptors, thus interfering with glucose metabolism process and causing adverse reactions of elevated blood glucose. Other adverse reactions of metoprolol tartrate are hepatic and renal damage, extremity chills, and bronchospasm. It is contraindicated in people with cardiogenic shock, sick sinus node syndrome, atrioventricular block of II and III degrees, unstable, decompensated heart failure. The specific use of the drug should be carried out under the guidance of a professional physician, do not use the drug without authorization to avoid adverse consequences.