Recovery · In Clinical Trials
GHK-Cu
No lawful US pathway
01 · Overview
A naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine) found in human plasma, saliva, and urine, with levels that decline with age (PMID 26236730). In fibroblast cultures, GHK-Cu stimulated collagen synthesis (PMID 3169264).
Reviews by its discoverer describe effects on glycosaminoglycans, metalloproteinases and angiogenesis, and gene-database analyses suggesting it may influence about 4,000 genes; these gene data are computational, not clinical outcomes (PMID 26236730).
02 · Research summary & key findings
Preclinical studies show increased type I collagen and glycosaminoglycan synthesis, metalloproteinase modulation, and angiogenesis (PMID 42619529). Animal studies describe faster wound healing and larger hair follicles (PMID 18644225). A 2026 systematic review found only 2 aesthetic RCTs, reporting reduced wrinkle volume and depth, and called clinical evidence limited (PMID 42619529).
03 · Regulatory status
GHK-Cu is currently undergoing clinical trials. It is not yet FDA-approved and is available only through clinical research settings or investigational protocols.
No lawful pathway today
GHK-Cu is not FDA-approved and does not currently have a lawful prescription or compounding pathway in the United States, so we do not sell it and will not book a consultation for it. That can change: in 2026 FDA began reviewing several peptides for compounding. If you are working on the goal it is studied for, a licensed clinician can tell you what is lawfully available, which may be something else.
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Tell me if the status changes
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Looking for a lawful, clinician-prescribed option for injury recovery and tissue repair?
GHK-Cu is still in clinical trials, is not FDA-approved, and has no lawful US compounding pathway, so we do not offer it and no clinician we work with will prescribe it. Products sold online as “research chemicals” are not made or tested to the standards required of medicines. If you are working on injury recovery and tissue repair, a licensed clinician can tell you at a free consultation whether an FDA-approved or lawfully compounded treatment fits you, or whether nothing does.
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04 · Administration routes
- Topical
- Subcutaneous injection
References
- [1]The human tri-peptide GHK and tissue remodeling J Biomater Sci Polym Ed, 2008. PMID 18644225
- [2]GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration Biomed Res Int, 2015. PMID 26236730
- [3]Stimulation of collagen synthesis in fibroblast cultures by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+ FEBS Lett, 1988. PMID 3169264
- [4]The Regenerative Potential of GHK-Cu in Aesthetic Medicine Aesthet Surg J, 2026. PMID 42619529
Primary literature
- PubMed: "GHK-Cu"
Peer-reviewed literature indexed by the National Library of Medicine.
- ClinicalTrials.gov: "GHK-Cu"
Registered interventional and observational studies, including status and phase.
- PubChem: "GHK-Cu"
Chemical structure, molecular properties, and bioactivity data.
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Disclaimer: This information is provided for educational and research purposes only. It is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any peptide therapy. The Peptide Association does not endorse or recommend any specific treatment protocol. See our editorial policy for how this content is produced and reviewed. Clinicians: join the network.