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While pills seem convenient, a weekly or monthly injection that you know is working can be a better fit for a busy lifestyle than a daily supplement that may not be fully absorbed
For example, someone with severe B12 deficiency and neurological symptoms might need more frequent injections at first
The body's capacity to absorb B12 from food is naturally limited by intrinsic factor, a protein produced in the stomach that binds to B12 and facilitates its absorption in the small intestine
The content below explains the scientific background, proposed research mechanisms, typical application areas, storage expectations, reconstitution considerations where applicable, and quality-control points that support careful experimental planning
