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The copper ion in GHK-Cu is sensitive to oxidation and light in ways that unbound peptides are not, which is why the handling recommendations for GHK-Cu include a few considerations beyond standard peptide storage protocols
Journal of Skin Research, 3(2), 44-50
Most side effects are transient and resolve within the first weeks of treatment
Documentation and tracking Keep a simple log for each vial: reconstitution date, water volume added, concentration, and a running tally of doses drawn with dates
Standard precautionary principles recommend avoiding use during pregnancy absent compelling medical necessity and informed risk-benefit assessment
Institut Universitaire de France
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