I am diabetic type 2 , and I am taking Glimepiride twice a day (total 4 mg) , I used to take one a day (2 mg) , but I complained high sugar , and my Doctor doubled it. I am still taking high number when I measure my sugar in night ( that is the time I measure it) like 160, 180 200 and highest I ever had was 266 list night. I called my Doctor office , he recommended Metformin. I don t like this medicine , because it created side effects like headache, stomach upset and so on. I am confused now. I exercise , I watch my diet still my sugar is high . Please tell me what triggers this . I appreciate your advise.