Metformin and B-12 malabsorption.
D001645:Biguanides / Q000009:adverse effects; D007408:Intestinal Absorption / Q000187:drug effects; D008687:Metformin / Q000009:adverse effects*; D014806:Vitamin B 12 Deficiency / Q000139:chemically induced*
D001645:Biguanides; D008687:Metformin