Big update The FDA has moved select peptides into Category 1 which means they can now be legally compounded and prescribed. Yes, we can now offer these to appropriate patients. As always: GHK Cu (Glycyl L Histidyl L Lysine Copper) is a naturally occurring peptide complex that binds copper, an essential trace mineral involved in tissue repair, collagen synthesis, and antioxidant defense. It declines significantly with age, which is why GHK Cu 99%+ Pure Peptide Amino Club Amino Club LVLUP Health GHK Cu Oral Copper Peptide Capsules Holistic Lifestyler Bunbury Chiropractic Services & Supplement Store