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Thymoquinone (Thy), a benzoquinone compound, is the main active ingredient in the extract of Nigella sativa seeds

Methionine: This essential amino acid acts as a powerful antioxidant and detoxifier

Newton GL, Fahey RC (1995) Determination of biothiols by bromobimane labeling and high-performance liquid chromatography

And for anyone comparing suppliers, the copper content question should sit at the top of the evaluation checklist because without chelated copper, GHK is simply a tripeptide with a fraction of the documented activity

Glutathione (or its other form L-glutathione, or glutathione reduced) can help combat free radicals and address Herxheimer reactions