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Overview GHK-Cu (Glycyl-L-Histidyl-L-Lysine Copper complex) is an endogenous tripeptide that binds copper(II) ions with high affinity and is present in human plasma at concentrations that decline markedly with age from roughly 200 ng/mL at age 20 to approximately 80 ng/mL by age 60
Naturally, I did a deep dive: spoke with their R&D team, reviewed the clinical data and safety reports, and patch-tested it myself
The altered intracellular redox state has been envisaged as target for anti-influenza therapy, but also in this case the data arising from in vivo studies are inconsistent, and in some cases have indicated that antioxidants could exacerbate the disease
Whey protein also contains cysteine, an essential amino acid that promotes the synthesis of glutathione and lessens oxidative stress