vitamin b12 injection bottle B-12 Injection, 3,000 mcg/mL at Tractor Supply Co 12 per dose Contains a sterile vitamin B Cyanocobalamin Injection – 1000 mcg/mL

4,5 Dietary insufficiency, pernicious anemia (i.e., an autoimmune process that reduces available intrinsic factor and subsequent absorption of vitamin B 12 1,2,6,7 ), and long-term use of metformin or acid-suppressing medications have been implicated in B 12 deficiency

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B12 modulates some of these effects but does not eliminate them entirely

S.BoutronI.et al (2019)

And lastly, Metformin, a drug used by around 92 million Americans to treat Type 2 diabetes, has been associated with B12 deficiency for decades