title: Use of metformin is a cause of vitamin B12 deficiency.
authors.forename: David R
authors.initials: DR
authors.lastname: Buvat
mesh_terms: D006801:Humans; D007004:Hypoglycemic Agents / Q000009:adverse effects*; D008687:Metformin / Q000009:adverse effects*; D014806:Vitamin B 12 Deficiency / Q000139:chemically induced*
chemical_list: D007004:Hypoglycemic Agents; D008687:Metformin