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Functions : Neutralizes free radicals (protects against cellular damage) Helps regenerate other antioxidants (like vitamins C and E) Supports liver detoxification processes Plays a role in DNA synthesis and repair, and protein synthesis Forms : Reduced glutathione (GSH) : The active form that acts as an antioxidant Oxidized glutathione (GSSG) : Formed when GSH donates electrons and becomes oxidized In summary: GHK-Cu is a copper peptide with various potential health benefits, particularly in skin care and regenerative medicine

Int Arch Allergy Appl Immunol, 82: 435-439

In another placebo-controlled trial with systemic curcumin (2 g/day), improvement was observed in both curcumin and placebo groups, indicating either a placebo effect or insufficient dosing of curcumin (Kia et al., 2020)

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Furthermore, imbalance between L-arginine and ADMA, an endogenous inhibitor of eNOS, leading to reduced L-arginine/ADMA ratio, contributes to eNOS uncoupling (Closs et al., 2012