I started Metformin last year for my prediabetes. 500 mg once a day after breakfast. I noticed that I was developing gastrointestinal issues having bouts of loose BM every time which made me very uncomfortable. I thought it was my Colace that was making my life miserable so I stopped Colace and still was experiencing GI issues and sometimes feeling dizzy. Now that I have stopped taking MF I am not having these issues. I discontinued MF on May 5. My blood sugar in the morning used to run between 96-105 pre Metformin. Using MF my BG range was 90-108. My BG after stopping MF has been 97-100. So it seems I was getting almost the same results. I changed PCP after I started my side effects with MF because my prior PCP kept telling me that it was necessary to keep taking it to avoid going into the Diabetes stage. I was telling her all the time that I was not feeling well and that I thought it was MF because I was very active with no GI issues before taking it. Anyway my new PCP told me to stop it & check my BG. Also she told me that she never prescribes Metformin to pre-diabetics because thete is no 100% accuracy that it will stop any person of having diabetes znd that many pre diabetic patients don’t need to take it if their A1C is normal as well as Blood sugar levels are less than 120 and that MF could cause unnecessary side effects. I am at that range. So as of today I am still getting normal BS range, follow the Mediterranean diet, exercise 5 days a week, drink only water, no sodas, no sweets, don’t smoke (never had) and don’t drink at all. This has been my experience. Always consult your physician before changing anything in your health regime. Stay well.