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Description
Association of B12 deficiency and clinical neuropathy with metformin use in type 2 diabetes patients

doi:10.1159/000053183

NCBI Bookshelf (2023) 11

The body can store Vitamin B12, unlike many other vitamins needed to remain healthy and does so in the liver

"Microbial production of vitamin B12 by methanol utilizing strain of Pseudomonas species"
Kwon, D.R
