Can GHK Cu Be Taken Orally? Oral GHK Cu Bioavailability, Tablets & Copper Peptide Safety Neurogan Health Let's talk about GHKU CU GHK Cu: The Regenerative Glow Peptide GHK Cu (Copper Peptide) is a naturally occurring peptide in your body that plays a powerful role in cellular repair, skin 16. Receptor Regulation Principles of Pharmacology Study Guide How GHK Peptide Works Signaling GHK acts as a switch for skin repair: Interacts with adenosine receptors reduces inflammation Activates MAPK ERK, PI3K Akt, TGF pathways Stimulates fibroblasts & keratinocytes boosts collagen, elastin Rigid flexible nanocarriers loaded with active peptides for antioxidant and anti inflammatory applications in skin ScienceDirect