Fasting blood sugar 11.5mmol/l, it is recommended to actively take medication under the advice of a doctor. The normal value of fasting blood glucose for normal people is 3.9~6.1mmol/l, fasting blood glucose 11.5mmol/l has been higher than the normal value, which belongs to the more serious diabetes, and it is recommended to use medication to control the blood glucose positively under the doctor’s advice. Patients can first take some hypoglycemic drugs, such as metformin, metformin is a common drug for diabetic patients, with good hypoglycemic effect. However, it is forbidden for patients who are allergic to the ingredients of metformin, diabetic ketoacidosis, severe alcoholism, and heart failure. The use of metformin needs to be under the supervision of a doctor. If the use of medication does not achieve the desired results, you can use insulin subcutaneous injection to control blood glucose under the advice of a doctor, along with a low-glucose diet and exercise and so on. Patients with fasting blood sugar 11.5mmol/l should go to regular hospitals in time, and adopt appropriate methods of treatment under the advice of professional doctors.