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Additionally, there was a noted possible reduction in the activity of myeloperoxidase (MPO), an enzyme that serves as a marker for neutrophil-driven inflammation and oxidative stress, in lung tissues that received GHK-Cu exposure

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GHK-Cu is present in human plasma at approximately 200 ng/mL (roughly 500 nM) in young adults around age 20, declining to approximately 80 ng/mL (roughly 200 nM) by age 60, representing a 60% reduction over four decades

It plays a central role in supporting immune health, cellular repair, and neutralizing free radicals