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For research use only. Not for human or veterinary use. Not a drug, food, or dietary supplement.
AMIRAVOResearch Library
Cycle-length evidence

GHK-Cu cycle length: what human studies ran

Not approved — research use onlyBLimited human data
Short answer: there is no established GHK-Cu cycle length, and we found no human studies that report one.

Treatment and follow-up in human studies

No human study durations are recorded.

What has not been tested

  • On-and-off schedules or breaks between courses.
  • Repeated courses and long-term exposure beyond the periods listed.
  • GHK-Cu combined with other compounds, unless a study above says so.

Frequently asked questions

Is there an established GHK-Cu cycle length?
No. We found no human studies that report a treatment duration for GHK-Cu.
What is the longest human study of GHK-Cu?
None is recorded.
Do study durations tell me how long to use something?
No. A study duration is how long investigators administered a compound to selected participants under monitoring. It is not a recommended course, and a break between courses has not been tested for any compound on this site that is not approved.
GHK-Cu dosing reference Full research page

References

  1. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data Int J Mol Sci. 2018
  2. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration Biomed Res Int. 2015
  3. GHK-Cu as a Bioactive Metallopeptide and Drug-Delivery Cargo: Coordination Chemistry, Formulation Science, Therapeutic Evidence, and a Translational Roadmap Pharmaceutics. 2026
  4. A Systematic Review of the Mechanisms and Therapeutic Applications of GHK-Cu in Topical Microneedle Delivery: A Case for Expanded Clinical Trials Arch Intern Med Res. 2026
  5. Effects of topical copper tripeptide complex on CO2 laser-resurfaced skin Arch Facial Plast Surg. 2006
  6. Augmented Skin Beneficial Effects of Thermus Thermophilus and Bacillus Subtilis Mixed-Culture Ferment Extract by Tripeptide GHK-Cu Skin Res Technol. 2026
  7. Tripeptide-copper complex GHK-Cu (II) transiently improved healing outcome in a rat model of ACL reconstruction J Orthop Res. 2015
  8. Evaluation of the effects of topical tripeptide-copper complex and zinc oxide on open-wound healing in rabbits Vet Dermatol. 2006
  9. DailyMed drug-label search for GHK (conducted for this entry) FDA DailyMed. 2026
  10. WADA International Standard: Prohibited List 2026 (S0 and S2.2) WADA Prohibited List. 2026
  11. PubChem CID 71587328 (prezatide copper) PubChem. 2026
  12. The human tri-peptide GHK and tissue remodeling J Biomater Sci Polym Ed. 2008
  13. The effects of topical tripeptide copper complex and helium-neon laser on wound healing in rabbits Vet Dermatol. 2008