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B12 shots have the potential for mild side effects, such as redness where the shot was injected or light diarrhea
Sterile water lacks this preservative and should only be used for single-dose reconstitution
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About this article Cite this article Gwyer, D., Wragg, N.M
Immune disorders such as Graves disease and lupus
As we get older, our bodies absorb less B12 from food
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