However, as reassuring as all of this is, there are a couple of things to remain mindful of: Copper toxicity Because GHK-Cu contains copper, it does pose a potential risk of copper toxicity,12 the symptoms of which include abdominal pain, vomiting, chest pain, chills, cough, fever, general weakness, anemia, burning sensations, tremors, and a metallic taste in the mouth.13 The risk is small, as the concentrations of copper in the peptide are typically well within safe parameters, but its good to be aware of it
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While individual responses vary based on wound characteristics, overall health, and other factors, general patterns emerge from research and community experience
Research models demonstrate its involvement in enzymatic antioxidant systems, including glutathione peroxidase and glutathione reductase pathways