compare b12 injections The Shot: What Every Human Needs to Know About Injectable Vitamin B12 B12 Shots vs. IV Infusions:
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They can range from mild skin irritation to more serious symptoms

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This product does not require to be reconstituted with bacteriostatic water

[PubMed] [Google Scholar] 4.Dugois P., Amblard P., Imbert R., de Bignicourt B

However, as with any biological therapy, the theoretical possibility of individual hypersensitivity cannot be entirely eliminated, and appropriate monitoring remains prudent

In fact its thought that up to 90% of people following these diets have a deficiency due to b12 being present naturally, only in animal foods
