GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or Peptide Therapy for Pain Management and Healing Core Medical & Wellness GHK Cu Peptide: Benefits for Tissue Repair, Healing, and Recovery Revolution Health & Wellness Peptide Labz Copper Peptide Hair Growth Serum, 10% GHK cu, 5% AHK cu, Rejuvenates Follicles Walmart.com Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms