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can humans use animal b12 injections Vitamin Troy Vitamin B12 Injection 100ml
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Liang, Y., et al

Although lumbar puncture is not mandatory in all cases, CSF analysis may show elevated gamma-aminobutyric acid levels (71) and oligoclonal bands (41)
Anyone quoting you a clean 95% oral bioavailability number for humans is repeating a marketing figure, not something from the literature

World Health Organization, 1988

Moms who are strict vegetarians or vegans and are breastfeeding are at a higher risk for Vitamin B-12 deficiency
