Vitamin B12 should be supplemented in vegetarians who do not get adequate amounts of B12 from diet or patients consuming a low calorie/low protein diet
Well look at what its made of, its benefits, and how its used worldwide
It appeared, as a peptide native and stable in human gastric juice, as a late outbreak of the cytoprotection/organoprotection concept of Robert and Szabo, a concept mostly from the stomach studies [10,11,12,13,14,15,16,17] for epithelial and endothelial protection, like the previous theoretical/practical breakthroughs in the 1980s and braingut axis and gutbrain axis (for review, see, i.e., [2,3,4,5,6,7,8])
You've had bypass surgery for weight loss, which removes part of your stomach