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How to Verify GHK-Cu Quality GHK-Cu is the tripeptide Gly-His-Lys chelated to divalent copper (Cu)

This direct access allows glutathione to work immediately, neutralizing free radicals and supporting detoxification

Selenium: This mineral is a cofactor for the enzyme that allows glutathione to neutralize peroxides

Red flags to avoid include prices significantly below market rates (often indicating diluted or contaminated products), absence of any testing documentation, unclear or evasive answers about sourcing, and vendors without verifiable Canadian presence

Skin Reactions Although rare, some people may experience temporary skin reactions such as: mild rash itching redness These reactions may occur due to ingredient sensitivity rather than glutathione itself