They exist in a regulatory gray area, often sold with labels that say "for research purposes only." This matters for a few reasons: Quality control is inconsistent
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Providing only one form still supports all B12-dependent processes in individuals with normal conversion capacity
[40] [41] In a study, B 12 deficiency caused by Helicobacter pylori was positively correlated with CagA positivity and gastric inflammatory activity, rather than gastric atrophy
Most improvement was achieved by BPC 157 regimens (42, 43) per-orally, parenterally and locally, even when complicated with relapse, poor healing of the fistulas, unhealed intestinal anastomosis (10, 11, 35, 42, 43) massive intestinal resection leading to short bowel (43) and functional incapability of the post-anastomotic remained intestine