Betalucil is the trade name for metoprolol tartrate. 25mg of metoprolol tartrate is taken as. 25 to 50 mg at a time, two to three times daily, with the maximum daily dose not exceeding 300 to 400 mg. Under normal circumstances. 25mg Metoprolol Tartrate can be taken 25 to 50mg at a time, 2 to 3 times a day, up to a maximum of 300 to 400mg a day.However, each person’s physical condition is different, and the exact dosage needs to be adjusted under the guidance of a doctor according to the situation of blood pressure and heart rate. Metoprolol tartrate is a selective beta 1 receptor blocker, which has the effect of lowering the heart rate, lowering myocardial oxygen consumption as well as lowering blood pressure. It can be used to treat hypertension, angina pectoris, arrhythmia and other diseases. However, it may cause side effects such as allergy, gastrointestinal reaction, bradycardia, arrhythmia, bronchial asthma, etc. Therefore, it is not recommended for patients who are allergic to this drug, cardiogenic shock, sick sinus node syndrome, severe atrioventricular block, and bradycardia.