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The body tightly regulates B12 absorption through intrinsic factor, a protein produced in the stomach that binds to B12 and facilitates its uptake in the terminal ileum
This is the dosing trap
However, your liver can store vitamin B 12 for up to five years, so it's rare for diet to cause this anemia
Storage and handling guidance , including reconstitution protocols (typically using bacteriostatic water or sterile saline) and shelf-life stability data
Iossifov I, Ronemus M, Levy D, Wang Z, Hakker I, Rosenbaum J, et al
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