ghk cu peptide mechanism Exploring the Role of Tripeptides in Wound Healing and Skin Regeneration: A Comprehensive Review Copper peptide GHK-Cu - Wikipedia
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In other words, you get B12 at the same rate you use it
They do not imply therapeutic, diagnostic, or clinical benefit

Regarding combined therapies, a trial indicated successful scar reduction with fat grafting combined with platelet-rich plasma (PRP) [44]

[DOI] [PMC free article] [PubMed] [Google Scholar] 223.Xu B., Xiao J., Xu K., Zhang Q., Chen D., Zhang R., Zhang M., Zhu H., Niu J., Zheng T., et al
Your doctor ran a basic metabolic panel and told you it's IBS

But improvements are often noticed after the first injection
