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Never use the same needle twice, as this can lead to infection or illness
Unlike fat-soluble vitamins, B12 does not accumulate in body tissues to toxic levels
To some people, yesthough others barely feel anything at all
Vitamin B is essential for red blood cell formation, nerve function, and DNA synthesis
Where to Get Help if You Dont Want to Self-Inject B12 Knowing how to inject B12 yourself might not be all you need
That is why tests like methylmalonic acid (4) tend to be much more accurate than serum B12 levels
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