Hi I am now on 1,500 mg Metformin plus between 12-20 Novarapid and 9 Lantus once a day. I have had a negative GAD antibody test but fit the profile for T1 at onset. My DSN has put me on the Metformin recently which I am increasing over a 4 week period in an effort to decrease Novarapid. I have found there is some effect but not much in the morning. If I eat carbs it will go well into double figures without Novarapid. Yet in the evening the Metformin seems to have an effect. My time in range has improved overall however, that is the range of 4-10 mmol. Next week my Metformin will be increased again to 1000 in the morning and same at night. I believe that is the maximum?
I am not confident that I will be off Insulin though even at that level. What type I am is still a mystery to me but my DSN is leaning toward T2 as Metformin does appear to have an effect. One thing that has helped me has been participating in a Freestyle Libre trial for free. Without a monitor I would have struggled to get the results I have. In my interpretation of NICE guidelines I should be prescribed but my hospital takes a different view.