The generic name of the drug Betalucil is Metoprolol succinate extended-release tablets, and half a tablet a day may lead to uncomfortable symptoms in the body when there is no indication, and when there is an indication, it can be used to treat related diseases. Metoprolol succinate extended-release tablets are usually used in the treatment of hypertension, angina pectoris, accompanied by abnormal left ventricular systolic function of the symptomatic stability of chronic heart failure, with the above indications you can take the drug, the specific dosage of the drug is recommended to follow the doctor’s instructions, without the indications are not recommended to use. Metoprolol succinate extended-release tablets may cause depression, nightmares, dizziness, extremity chills, shortness of breath during exercise and other adverse reactions. It is contraindicated in patients with cardiogenic shock, sick sinus node syndrome, hypersensitivity to the components of the product or hypersensitivity to other beta-blockers. Patients are advised to use the drug in strict compliance with medical advice.