Taking metoprolol tartrate tablets blood glucose high and low need to be clarified under the guidance of the doctor whether it can still continue to use. Metoprolol Tartrate Tablet is a beta-blocker drug used to treat high blood pressure, angina pectoris, arrhythmia, hyperthyroidism and so on. The drug can affect the metabolism of blood glucose, resulting in an increase in blood glucose, but to a limited extent and without much adverse effects. In patients with diabetes mellitus, the addition of metoprolol tartrate tablets along with insulin application and the effects of metoprolol tartrate tablets can mask symptoms of hypoglycemia such as palpitations, thus delaying the timely detection of hypoglycemia, so blood glucose should be closely monitored. Common adverse reactions to metoprolol tartrate tablets are fatigue, headache, dizziness, abdominal pain, nausea, and vomiting, often dose-related. Cardiogenic shock, sick sinus node syndrome, and hypersensitivity to the product are contraindicated. Diabetic patients are advised to keep a close eye on their blood glucose while taking the drug and to visit the hospital promptly in case of any discomfort.