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Note that retinol and copper peptides should not be used together to avoid potential irritation and reduced efficacy
Sources: Sonthalia et al., 2018 , Narrative review, 2025 Precautions before treatment Disclose your full medical history, medicines and supplements Get a personalised dose and route from a qualified doctor Avoid if pregnant or breastfeeding Flag any known allergies or sensitivities Self-medication or IV use without medical supervision can pose serious health risks
copper accumulation with high-dose GHK-Cu Recommended monitoring labs / IGF-1, fasting glucose, HbA1c, serum copper, ceruloplasmin Regulatory status / both are research peptides
2006 Sep;126(9):1966-75
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