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A significant portion of vitamins is lost to the stomach, while vitamin B12 injections allow for 100% absorption
It is studied for its ability to improve muscle function, increase lean mass, and support healthy aging by optimizing the NAD+ metabolome.
The best results come from correcting deficiency or maintaining levels when you cannot absorb B12 properly
(1) Criteria for the use of vitamin B12 (a) approved value in the treatment of pernicious anaemia only (other conditions are very rare in British general practice)
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