The best time to take Betaloc is in the morning or in two doses in the morning and in the evening. Betalac is a beta-blocker, mainly used for the treatment of cardiovascular diseases such as tachycardia, hypertension, angina pectoris, arrhythmia, and also for the treatment of tachycardia caused by hyperthyroidism. It is recommended to take it in the morning if it is taken once a day, or in the morning and evening if it is divided into two doses a day. Generally, Betalac has side effects when taken for a long period of time and needs to be taken with other medications for the treatment of the disease, so the specific timing of the dose should be followed by medical advice. In addition, Betalac should not be used in patients with II and III AV block and severe bradycardia; and should be used with caution in pregnant women, nursing mothers, and patients with hepatic insufficiency. Patients should not stop taking Betalac suddenly, but should gradually reduce the dosage over 7-10 days and eventually stop taking it.