GHK-Cu (glycyl-L-histidyl-L-lysine bound to a copper ion) is a naturally occurring tripeptide found in human plasma, saliva, and urine. It was first isolated by Pickart and Thaler in 1973 and has since accumulated one of the more substantial bodies of peer-reviewed literature of any research peptide in its class. Its primary research interest lies in…
GHK-Cu is one of the most researched peptides in regenerative biology — with preclinical studies linking it to collagen production, wound healing, and age-related tissue repair. Unlike most synthetic research peptides, the GHK-Cu peptide is not a laboratory invention. It occurs naturally in human plasma, saliva, and urine, and its concentrations decline measurably with age…
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