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The most common issues are mild headache, fatigue during the first few days of dose increase, and occasional injection site irritation

3rd-party tested 99%+ purity Secure checkout Discrete packaging Buy more, save more Auto-applied in cart Description Specifications Transport & Storage AHK-Cu is a copper-binding tripeptide complex built around the alanine-histidine-lysine sequence

FDA Registration No: 13-1-01563-5-0080

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Gene Expression Modulation Research has demonstrated that GHK-Cu can modulate the expression of a large number of genes

Typical responses are localized irritation at injection sites, mild allergies, and brief flu-like symptoms