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The GHK-Cu peptide is a copper-binding tripeptide, and that copper atom adds an extra dimension of instability

In the nucleus, following heterodimer complex formation with transcription factors, like small Maf proteins (G/F/K) and c-Jun, Nrf2 complexes bind to the antioxidant response element (ARE), a regulatory enhancer region within gene promoters that upregulate antioxidant and anti-inflammatory defense processes (Cuadrado et al., 2019

BPC, chemically, looks like a smaller part of that natural protein

For athletes or those who prefer steady-state levels, Thorne Glutathione-SR provides NSF-certified sustained-release technology

These are favorable odds for a relatively low-risk intervention, but they underscore that peptide therapy does not work for everyone