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Intracellular concentrations range from 1-10 mM, making it one of the most concentrated metabolites in mammalian cells
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Upregulates growth factors such as VEGF (vascular endothelial growth factor) and FGF (fibroblast growth factor), accelerating wound repair
GHK-Cu (glycyl-L-histidyl-L-lysine-copper) is a naturally occurring tripeptide your body produces, but levels drop sharply with age, from roughly 200 ng/mL at age 20 to about 80 ng/mL by age 60
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