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holding the needle in place ~5 seconds before withdrawal
Because injections bypass the digestive tract, they may offer different absorption characteristics than oral routes, though the clinical significance of this is still being studied
Therefore, if the body is deficient in vitamin B12, the level of MMA is likely to increase
Vitamin B12 injections are generally considered safe and well-tolerated, with minimal side effects
Concerns around pleiotropic activity, sourcing variability, and regulatory guidance are valid and underscore the need for ongoing safety monitoring and thoughtful application
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