GHK-Cu: Side Effects & Safety

Part of the GHK-Cu Complete Guide

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GHK-Cu Copper Peptide (50mg)

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Safety Profile

Naturally occurring human peptide with excellent safety. Extensively used in commercial skincare.

Topical: Occasional mild irritation; temporary blue-green tint at high concentrations
Injectable: Mild injection site redness
Contraindications: Wilson's disease, copper sensitivity, pregnancy/breastfeeding
Avoid combining topically with strong oxidizers that destabilize the copper complex

For the complete overview, see the GHK-Cu complete guide.

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Peptides Insider Editorial Team

Our content is reviewed for accuracy and grounded in peer-reviewed research where available. We do not provide medical advice. Always consult a qualified healthcare professional.