Hello everyone, I just wanted to let you know, because your doctor probably wont tell you that the use of Metformin PREVENTS the absorption of Vitamin B12. I was shocked to find this out, as my doctor never told me. I took Metformin for 2 years and now I have symptoms of B12 deficiency, confirmed after blood tests. Consider taking a B12 supplement if you take this drug. And if you require evidence, check out any web site or Google Metfomin and Vitamin B12. I am disgusted that my doctor never told me this, because if I can find this out, so can he. I will be posting separately about my symptoms.