Betalax, or metoprolol tartrate, should not be taken by diabetic patients, probably because of the combination of decompensated cardiac insufficiency, cardiogenic shock, sick sinus node syndrome and other diseases. Diabetic patients can take metoprolol tartrate under the supervision of a doctor if there is an indication for it. metoprolol tartrate is a drug for the treatment of the heart and has little effect on blood sugar. People with diabetes, in the case of long-term poor glycemic control, may develop many chronic complications, and cardiovascular disease is the main complication. If diabetic patients have cardiovascular disease is to be treated with medication, metoprolol tartrate main ingredient is metoprolol, this drug is relatively small effect on blood sugar, is the treatment of arrhythmia as well as tachycardia medication, can control the heart rate, but also to treat a series of diseases caused by tachycardia. Diabetic patients who need to use metoprolol tartrate are recommended to use the drug properly under the guidance of a physician, and usually pay attention to monitoring blood sugar and heart rate, oxygen saturation, blood pressure and other indicators. Dietary attention to diversification, small meals, reasonable control of total calories, avoid irregular eating.