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Freezing reconstituted peptide solutions can cause ice crystals to form that damage the protein structure
Research Compound Notice: GHK-Cu (Copper Tripeptide-1) is available both as a cosmetic ingredient and as a research compound
The main concern is stacked GI side effects - both compounds slow digestion through different pathways, so combining them can amplify nausea, vomiting, and constipation
Loren Pickart at UCSF.[1] Origin: GHK is an endogenous peptide found in human plasma, saliva, and urine
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