I'm prediabetes and PA put me on metformin. I haven't had the lactic acidosis but I have heard from others that it can lead to B12 deficiencies. So I have been taking it on my own and plan to ask the PA later. Some of the people on my LCHF/KETO diets forums also take the metformin and have lost enough weight that they no longer needed to take it. And I haven't been taking the metformin every day.
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