Betalucil generally refers to Metoprolol Succinate Tablets and Bisoprolol generally refers to Bisoprolol Fumarate Tablets. Usually 47.5mg of Metoprolol Succinate Tablets corresponds to 2.5mg of Bisoprolol Fumarate Tablets, and the specific dosage should be taken according to the doctor’s prescription. The indications for bisoprolol fumarate tablets/injection are hypertension, coronary artery disease (angina pectoris), and moderate to severe chronic stable heart failure with ventricular hypoconstriction. Metoprolol succinate tablets are indicated for supraventricular tachyarrhythmias. Prevention and treatment of myocardial ischemia, tachyarrhythmias and chest pain in patients with confirmed or suspected acute myocardial infarction. In case of decompensated cardiac insufficiency, cardiogenic shock, sick sinus node syndrome, second or third degree atrioventricular block, and for the treatment of supraventricular tachyarrhythmias, administration of metoprolol succinate tablets is contraindicated in patients with systolic blood pressure of less than 110 mmHg. Bisoprolol fumarate tablets should not be used in patients with acute heart failure or in the decompensated phase of heart failure requiring treatment with sedated positive inotropic drugs, in those with cardiogenic shock, or in those with second- or third-degree atrioventricular block (without pacemaker). Therefore, it is recommended that if you need to use the drug, it must be used under the guidance of a physician to avoid unnecessary harm.