Primary sources

The list below collects every source cited across the index, research, dosage, FAQ, about, and contact pages of this site. Entries are ordered by their first appearance in the text. PubMed Central, journal-page, and DOI links are provided where available. For older or paywalled sources, the most authoritative open-access summary is linked instead.

This archive prioritises peer-reviewed primary research and systematic reviews. Vendor blogs, unsourced advocacy pieces, and supplement-industry summaries were excluded from the citation list.

  1. Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. International Journal of Molecular Sciences. 2018;19(7):1987. source →doi: 10.3390/ijms19071987
  2. Campbell JD, McDonough JE, Zeskind JE, et al. A gene expression signature of emphysema-related lung destruction and its reversal by the tripeptide GHK. Genome Medicine. 2012;4(8):67. source →doi: 10.1186/gm367
  3. Mao S, Huang J, Li J, et al. Exploring the beneficial effects of GHK-Cu on an experimental model of colitis and the underlying mechanisms. Frontiers in Pharmacology. 2025;16:1551843. source →doi: 10.3389/fphar.2025.1551843
  4. Chen H, Yang P, Xue P, et al. Food-Derived Tripeptide-Copper Self-Healing Hydrogel for Infected Wound Healing. Biomaterials Research. 2025;29:0139. source →doi: 10.34133/bmr.0139
  5. Adnan SB, et al. Exploring the Role of Tripeptides in Wound Healing and Skin Regeneration: A Comprehensive Review. International Journal of Medical Sciences. 2025;22(16):4175-4200. source →doi: 10.7150/ijms.118118
  6. Leyden JJ, Stephens T, Finkey MB, et al. Use of a copper-binding peptide in skin cosmetics (clinical evaluation of GHK-Cu cream over 12 weeks, n=67). Reported in Pickart & Margolina 2018 review. source →doi: 10.3390/ijms19071987
  7. Badenhorst T, Svirskis D, Wu Z. An anti-aging dermatologic formulation containing the copper peptide tripeptide-1 (GHK-Cu). Journal of Aging Science. 2016;4:166. source →doi: 10.4172/2329-8847.1000166
  8. Bobyntsev II, Chernysheva OI, Dolgintsev ME, Smakhtin MY, Belykh AE. Influence of Gly-His-Lys peptide on anxiety-related behavior in rats. Bulletin of Experimental Biology and Medicine. 2015;158(6):737-739. source →doi: 10.1007/s10517-015-2847-3
  9. Sever'yanova LA, Dolgintsev ME. Effects of Gly-His-Lys peptide and its analogs on aggressive behavior in rats. Bulletin of Experimental Biology and Medicine. 2017;163(4):441-444. source →doi: 10.1007/s10517-017-3943-3
  10. Beretta G, Artali R, Maffei Facino R, et al. LDL oxidation studies referenced in Pickart & Margolina 2018, demonstrating complete suppression of Cu(2+)-dependent lipid peroxidation by GHK at micromolar concentrations. source →doi: 10.3390/ijms19071987
  11. Miller DM, Buettner GR, Aust SD. Iron-induced inhibition of tubulin polymerization: protection by glycyl-histidyl-lysine. Advances in Experimental Medicine and Biology. 1990;264:301-304. source →doi: 10.1007/978-1-4684-5730-8_11
  12. Pickart L, Vasquez-Soltero JM, Margolina A. The Human Tripeptide GHK-Cu in Prevention of Oxidative Stress and Degenerative Conditions of Aging: Practical Use. Oxidative Medicine and Cellular Longevity. 2012;2012:324832. source →doi: 10.1155/2012/324832
  13. Topical copper-peptide formulations in post-procedural skin recovery: 2024 multicenter clinical evaluation, summarized in Adnan 2025 review. source →doi: 10.7150/ijms.118118
  14. U.S. FDA. Confirmed removal of injectable GHK-Cu from Category 2 (April 2026); withdrawn 503A bulks list nominations; Pharmacy Compounding Advisory Committee consultation pending. source →
  15. Pyo HK, Yoo HG, Won CH, et al. The effect of tripeptide-copper complex on human hair growth in vitro. Archives of Pharmacal Research. 2007;30(7):834-839. source →doi: 10.1007/BF02980242
  16. Arul V, Kartha R, Jayakumar R. Glycyl histidyl lysine-Cu(II) chelate-loaded collagen films for accelerated wound healing in diabetic rats. Journal of Biomedical Materials Research Part B. 2007;82(2):340-345. source →doi: 10.1002/jbm.b.30246
  17. Pickart L, Vasquez-Soltero JM, Margolina A. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. BioMed Research International. 2015;2015:648108. source →doi: 10.1155/2015/648108
  18. Tricho-test clinical evaluation of a topical GHK peptide complex (45 men, 6 months), reported in Pickart & Margolina 2018 review. source →doi: 10.3390/ijms19071987
  19. Pickart L, Margolina A. Skin Regenerative and Anti-Cancer Actions of Copper Peptides. Cosmetics. 2018;5(2):29. source →doi: 10.3390/cosmetics5020029
Cyanotype Prussian-blue band with single white rule and copper archival stamp
Plate VIIArchival mark