how much b12 should a human take via injection Best Vitamin Site: Administering B12 Shots How Long Does a B12
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J Clin Endocrinol Metab 90:59375941
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16 weeks 11 vials Covers a 4-week 300 mcg lead-in plus 12 weeks at 500 mcg
They can mean regression
Vitamin B12 deficiency isn't very common in the US, as people who don't eat enough animal products can still get vitamin B12 from supplements or fortified food sources
Henry RR, Abrams L, Nikoulina S, Ciaraldi TP
