GHK Cu (100 MG) Sigma Compounds GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has GHK Cu Peptide Therapy Brea, CA Orange County The U.S. Food and Drug Administration is moving toward allowing compounding pharmacies to produce more than a dozen injectable peptides that were banned because of potentially significant safety risks, the New York Injectable GHK Cu: Beginner's Guide to Copper Peptide