Betaxolol, also known as metoprolol tartrate, is the most commonly used beta-blocker in clinical practice. Patients with coronary artery disease need to strictly control their heart rate to reduce myocardial oxygen consumption, and patients with tachyarrhythmias need to slow down their heart rate to improve their symptoms. Betalac can slow down the heart rate of patients, reduce myocardial oxygen consumption, improve the symptoms of arrhythmia, and even relieve the onset of angina pectoris. In addition, studies have found that patients with heart failure need to be treated with Betalac. This is because betalac can effectively prolong the survival of patients with heart failure and improve their prognosis. In addition, betalactam is also a commonly used antihypertensive drug in clinical practice. The current clinical antihypertensive drugs are divided into five categories, including beta-blockers, which can act on the beta receptors in the blood vessels, effectively lowering blood pressure to a stable, ideal state.