ghk-cu immunogenicity antibody formation risk Copper Peptide Regeneration Review (2018) — Research Summary Frontiers | Exploring the beneficial
Description
Studies demonstrate BPC-157 treatment restores epithelial thickness toward normal values, objectively documenting tissue regeneration rather than merely symptomatic improvement

You may experience fatigue or lethargy, among other symptoms, if you have a B12 deficiency
Also, I love that it includes Glycine and B12

However, it should be carefully noted that the very limited number of human trials have made no specific mention of adverse reactions
