The effects of daily dose and treatment duration of metformin on the prevalence of vitamin <scp>B12</scp> deficiency and peripheral neuropathy in Chinese patients with type 2 diabetes mellitus: A multicenter cross‐sectional study

Abstract

High daily dosage (≥1500 mg/day) played an important role in metformin-associated vitamin B12 deficiency while not contributing to the risk of PN.