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This entry or formulation may be investigational and may not correspond to an FDA-approved product; safety and efficacy may not have been established. Kairo lists it for identification and record-keeping only.
Overview
Product & regulatory status
Research entry: inclusion is for identification, not approval or a recommendation to use it. Verify the exact product and current US status with a pharmacist.
A copper-binding complex
GHK-Cu combines a short peptide with copper. The cited experiment investigated connective-tissue responses around experimental wounds, a biological rationale for further investigation rather than proof of cosmetic or injectable benefit. [1]
What the evidence shows
Wound research in animals
A rat wound experiment studied connective-tissue accumulation with a copper-peptide complex. This is animal evidence, not proof that injections improve skin or hair in people. [1]
Connective-tissue markers versus visible results
The rat experiment assessed material accumulating in experimental wound chambers, including collagen and other connective-tissue components. It did not measure cosmetic wrinkle reduction, hair regrowth, or recovery in human users. Those require separate human studies of the relevant product. [1]
What remains unknown
The cited animal study does not establish human cosmetic outcomes, hair growth, or long-term injectable safety.
Safety
Injectable safety
FDA notes limited human safety data and potential immune-reaction risks for injectable GHK-Cu. [2]
Topical and injectable are different questions
An experimental rat wound preparation does not establish how a human topical product penetrates skin or how an injectable product should be prepared. Formulation-specific clinical and stability evidence is needed. [1]
Understanding product quality
Compounded drugs are not FDA-approved finished products. Poor preparation can cause contamination or incorrect strength. A catalog entry or a research paper is not a quality assessment of your product. [3]
When to seek urgent help
Severe allergic symptoms such as trouble breathing, throat or tongue swelling, or fainting need immediate help. Call 911 or your local emergency number. This is general emergency information, not a complete list of risks for this compound. [4]
A starting point for discussion
This is not a complete list of adverse effects or interactions. Your health history, other medicines, and the exact formulation matter. Missing safety data is not evidence of safety.
Common questions
Do topical findings apply to injections?
No. Changing the route changes exposure. Evidence should match the formulation, route, population, and outcome being discussed.
Questions for your clinician
Does the evidence match my condition and this exact product? What risks or interactions matter for me? How would we assess whether it is helping?
Sources
- In vivo stimulation of connective tissue accumulation by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+ in rat experimental wounds1993 · animal study · DOI 10.1172/JCI116842
- Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety RisksFDA · safety information · accessed September 2026
- Compounding and the FDA: Questions and AnswersFDA · product quality and regulation
- AnaphylaxisMedlinePlus · recognizing an emergency
Educational information, not a recommendation to use a compound. Kairo does not give dosing advice. Review decisions with a licensed healthcare professional.