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Use these checks to identify a reliable GHK-Cu product: Color check: Authentic GHK-Cu powder is blue to blue-purple from the copper(II) ion in the GHK coordination geometry
Any noticeable improvement in energy levels or your get-up-and-go, without an underlying deficiency, could simply be a placebo effect
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Isocyanate inactivation of yeast glutathione reductase & its modulation by oxidised [PMID: 8736983] Laboratory literature summary: Isocyanate inactivation of yeast glutathione reductase & its modulation by oxidised glutathione and NADPH
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