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If consumed, its relatively high level of impurities will elevate the risk of immunogenicity (a state in which the bodys immune system interprets a substance as a danger and mounts a potentially life-threatening response against it).19 Safe, pharmaceutical-grade KPV can be found online through reputable telemed platforms, but those opportunities are scarce right now, and you may first have to meet specific conditions
Duval, A
Pernicious Anaemia is Lifelong: If your deficiency is due to pernicious anaemia (lack of intrinsic factor), B12 injections will be lifelong, as the underlying absorption problem is permanent
This is because methylcobalamin B12 acts on the bone marrow to normalize red blood cell formation
Elbert T, Pantev C, Wienbruch C, Rockstroh B, Taub E (1995)
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