I have been diabetic (type 2) for several years now. Last year I had bariatric surgery and the diabetes disappeared with the weight...right til I started on the Pred :/ At any rate I started Metformin again and it seems to handle the levels just fine with Prednisone being the only major factor in the blood suger getting out of wack. As of this time my A1C levels have never been out of normal range, just my short term glucose levels. I need to start checking more regularly now that I'm down to 10mg a day of Prednisone.