PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20134380-0 2010 Metformin-induced vitamin B12 deficiency presenting as a peripheral neuropathy. Metformin 0-9 NADH:ubiquinone oxidoreductase subunit B3 Homo sapiens 26-29 20134380-1 2010 Chronic metformin use results in vitamin B12 deficiency in 30% of patients. Metformin 8-17 NADH:ubiquinone oxidoreductase subunit B3 Homo sapiens 41-44 20134380-6 2010 To my knowledge, this is the first report of metformin-induced vitamin B12 deficiency causing neuropathy. Metformin 45-54 NADH:ubiquinone oxidoreductase subunit B3 Homo sapiens 71-74