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Researchers have determined that the copper ion in GHK-Cu is coordinated by, among others, nitrogen from histidine and oxygen from lysine, and allows the delivery of copper into the cells [4, 5]
These can range from mild (like nausea) to rare-but-serious (like kidney issues or vision changes in people with advanced diabetes)
Storage, Handling, and Usage Considerations Because peptides are chains of amino acids bonded together, their structural integrity is highly sensitive to environmental factors like heat, light, and physical agitation
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