Bisoprolol Fumarate Tablets is a highly selective β1-adrenoceptor blocker, which has the effect of slowing down the heart rate, lowering the blood pressure, reducing myocardial contractility, lowering the cardiac oxygen consumption, and also inhibits the β2-adrenoceptors on the bronchial and vascular smooth muscle in excess of the therapeutic dosage (≥20mg). Bisoprolol fumarate tablets are mainly used for the treatment of hypertension, coronary heart disease (angina pectoris), chronic stabilized heart failure accompanied by left ventricular systolic hypoplasia. Adverse effects of Bisoprolol Fumarate Tablets include dizziness, headache, bradycardia, coldness or numbness of the extremities, hypotension, nausea, vomiting, diarrhea, constipation, debility, fatigue, depression, and sleep disorders. Additional adverse reactions that can occur with beta-adrenergic receptor blocker overdose include bradycardia, hypotension, bronchial asthma, acute cardiac insufficiency, and hypoglycemia. This drug is contraindicated in patients with acute heart failure or decompensated stages of heart failure requiring sedation of positive inotropic drugs, cardiogenic shock, second- or third-degree atrioventricular block, sick sinus syndrome, sinoatrial block, symptomatic bradycardia or hypotension, severe bronchial asthma, severe peripheral arterial occlusive disease and Reynaud’s syndrome, untreated pheochromocytoma, and metabolic acidosis. In addition, bisoprolol fumarate tablets are contraindicated in patients who are allergic to any of the ingredients in the tablets, and the use of this drug is not recommended for pregnant women, lactating women, and children. If you need to use Bisoprolol Fumarate Tablets, it is recommended that you consult a professional doctor and follow the doctor’s instructions for standardized treatment, and not blindly use the drug on your own.