Betalucil extended-release tablets, actually metoprolol tartrate extended-release tablets, can be broken in quarters to take, this drug belongs to the beta-blocker, in the clinic is used for arrhythmia, myocardial ischemia, heart failure and other diseases, the use of combined with the patient’s heart rate, cardiac function and other conditions, sometimes need to break a quarter of the dose, which is possible. Arrhythmia patients, such as sinus tachycardia, fast heart rate, combined with the patient’s heart rate, it is recommended to start a small dose of oral intake, to observe the patient’s heart rate recovery, then you can break open a quarter of the dose. Myocardial ischemia patients, especially exertional angina pectoris, patients oral beta blocker control ventricular rate, reduce myocardial oxygen consumption, if the patient’s ventricular rate itself is not fast, it is recommended to break open a quarter of the extended-release tablets to start taking. Patients with heart failure, when the cardiac function improves, it is recommended to take oral beta-blockers to improve the long-term prognosis, you need to start with a small dose to avoid recurrent heart failure, which requires metoprolol tartrate extended-release tablets to break open a quarter to start taking. Slow heart rate, low blood pressure, poor cardiac function, asthma patients, caution in the use of this drug, oral administration, pay attention to monitoring blood pressure, heart rate, to avoid blood pressure is too low, heart rate is too slow, asthma patients may induce wheezing, there are patients who may be fatigue obvious. The use of symptoms aggravated need to promptly consult the appropriate department.