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Key Takeaway: GHK-Cu does not just stimulate new growth

Reconstituted solutions should be handled carefully and protected from degradation

The copper binding occurs through a specific square-planar pyramid configuration involving nitrogen atoms from histidine and glycine, plus a deprotonated amide nitrogen and carboxyl oxygen from lysine

Based on researcher community reports, the most commonly noted adverse effects are injection site reactions (redness, minor discomfort), mild nausea particularly with oral administration, and occasional transient dizziness or headache

The success of approved peptides in areas such as diabetes, cancer, and rare diseases demonstrates their clinical utility and has supported continued investment in peptide drug development