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In the small intestine, enzymes break these bonds to release the B12 molecule which then binds with a special protein called intrinsic factor (IF)
Copper peptide problems typically resolve with concentration reduction
We were exploring ways of developing peptides that bind selectively, and we were very successful at that, but then we confronted the problem that our short, 23-residue peptides are not promising therapeutic candidates primarily because they cannot get into cells, Keating says
Antacids and proton pump inhibitors such as Prilosec, Protonix, Prevacid, Aciphex, Zantac and Pepcid also can lead to B12 deficiency, because they reduce the stomach acid necessary to release the B12 from food
