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GHK-Cu Copper Peptide 100mg GHK-Cu (Glycyl-L-Histidyl-L-Lysine copper complex) is a naturally occurring tripeptide-copper complex first identified by Loren Pickart in 1973 with over 50 years of published research
However, in some cases, high doses can cause mild symptoms
Higher concentrations (above 2-3%) and daily use are common causes of irritation in beginners
Lyophilized powder remains stable for 1 to 2 years when refrigerated and even longer when frozen
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