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DSIP 5mg True Form Peptides If you're using GHK Cu and it stings a little (which is common) this one's for you In this reel I'm sharing the small tweaks that have helped me make peptide injections GHK Cu: the copper peptide your body already produces just less of it every year. Between ages 20 and 60, your GHK Cu levels drop by 70%. That matters because this single peptide GHK Cu (Copper Peptide): What the Data Actually Suggests GHK Cu is a naturally occurring tripeptide (glycyl L histidyl L lysine) bound to copper, identified in human plasma and known to decline with age. Current literature has explored