Betalactam is a beta-blocker that improves myocardial ischemia. It is used for secondary prevention of coronary artery disease and angina pectoris, and is one of the very important drugs for the treatment of myocardial ischemia. It can slow down the patient’s heart rate and reduce myocardial oxygen consumption, thus improving the patient’s symptoms of myocardial ischemia. The main ingredient of Betaxolol is metoprolol, which is often used clinically in combination with nitrates to improve the symptoms of myocardial ischemia and angina pectoris. It is also suitable for the treatment of myocardial ischemia in patients with disorders of vegetative nervous function or sympathetic excitation. However, when applying this drug, it is important to note that it is not recommended for patients with bradycardia or chronic obstructive pulmonary disease or bronchial asthma. Also, if you need to reduce or discontinue the dosage of Betalac while applying it, you must gradually reduce and discontinue the dosage.