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They're less susceptible to degradation from environmental factors once packaged
Stomach acid is crucial because it helps separate B12 from the protein its attached to in food
The honest answer is more useful and less convenient: there is no universal dose that is correct for everyone, and the figures circulating on vendor pages and forums are not a safe basis for self-administration
Doctors need to diagnose a Vitamin B12 deficiency or a condition that needs it
dosing from unregulated online sources is unverified
A good candidate for self-injection is someone who is medically stable, has no bleeding disorder, is not on high-dose blood thinners without medical guidance, has completed an in-clinic training session, and has a reliable sharps container at home
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