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Consult your doctor before breast-feeding

Unknown long-term profile: No human safety data, so caution and monitoring are advised

Data were log 10 transformed if they were non-normally distributed and/or heteroscedastic

Deficiency is particularly common in elderly people, because the ability to absorb vitamin B12 can decrease with age

B12 IV infusions deliver cobalamin directly into the bloodstream alongside hydrating fluids, bypassing digestive barriers entirely

But even without that level of customization, understanding the core dosing principles will put you ahead of most researchers fumbling through contradictory information online