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When you swallow a B12 pill, several steps have to work for it to be absorbed: stomach acid and the enzyme pepsin must release B12 from food or the supplement, the stomach must secrete a protein called intrinsic factor that binds to B12, and the B12-intrinsic factor complex must reach the ileum (the end of the small intestine) where it is finally absorbed
J Urol 1987
The critical advantage of B12 injections over oral supplements lies in their absorption and immediate availability to the body
Results The depth and percentage of microneedle penetration were correlated with application forces, which in turn influenced the extent of enhancement in the skin permeability of GHK-Cu
Any haziness indicates peptide aggregation or contamination
This is normal, no reason to worry about and the sensation should subside shortly after the injection is completed
