In practice, a correctly synthesized, third-party-tested peptide can degrade significantly if stored improperly after delivery
DOI:10.1155/2020/6805354 3.Knezevic.M, Gojkovic.S, Krezic.I, Zizek.H, Vranes.H, Malekinusic.D,Complex Syndrome of the Complete Occlusion of the End of the Superior Mesenteric Vein, Opposed with the Stable Gastric Pentadecapeptide BPC 157 in Rats
Then you need to have intrinsic factors on the gut lining to bring B12 into circulation, transcobalamin proteins to move it around the body and finally, pancreatic enzymes for absorption
it is about reclaiming energy, improving markers of health like blood pressure and blood sugar, and feeling in control of your choices