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The Science Behind GHK-Cu: How It Works GHK-Cu, short for glycyl-L-histidyl-L-lysine-copper , is a naturally occurring copper peptide found in human plasma

[DOI] [PMC free article] [PubMed] [Google Scholar] Willems P, Van Breusegem F, Huang J

Catalase activity is defined in international units equal to the amount of enzyme necessary to decompose 1 M of hydrogen peroxide per minute at pH 7.0 and 25 C at a substrate (hydrogen peroxide) concentration of 65 mM

However, as we age, our natural production of glutathione tends to decrease

Awc L, Mr Z, Helmy H, et al
