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Description
Vitamin B12 helps your body produce red blood cells, which carry oxygen to your tissues
This is a commonly referenced study from 1963 claiming a half-life of 5-6 days: nature.com/articles/198200a0 Although I would not cite it as an authority, the six-day half-life has also made it onto the B12 page in Wikipedia, seemingly unchallenged
contains no bacteriostat, antimicrobial agent or preservative
Endocrine Reviews, 21(5), 579-607
