GHK-Cu (Copper Peptide)
Research chemical — not an approved drug or dietary supplement
This compound is sold for research and is not FDA-approved for human use or as a dietary supplement. Human evidence is limited; purity and dosing of consumer products are unverified. The data below is an evidence review for education only — talk to a clinician before considering it.
At a glance
- Best for
- Not established — investigational (note: cosmetic topical use is a separate, regulated category)
- Main caution
- Injected/research GHK-Cu is unapproved and unstudied in humans; copper overload risk and unregulated purity
What is it
GHK-Cu is a naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine complexed with copper) found in plasma at declining levels with age. It is proposed to support skin remodeling, wound healing, and antioxidant signaling by modulating gene expression and delivering copper to tissues. It appears as an ingredient in some cosmetic topicals, but injectable 'research' GHK-Cu is a different matter: there are no controlled human trials establishing the safety or efficacy of injected GHK-Cu, and it is not FDA-approved as a drug or a dietary supplement. The injectable form is sold only 'for research use only.'
Is it worth it for you?
Probably skip if…
- You expect an approved injectable therapy — it is neither FDA-approved nor a supplement
- You would source it from 'research use only' vendors with no purity or sterility controls
- You are not prepared for unknown effects of injected copper, including copper accumulation/toxicity
- You are uncomfortable with self-injection risks such as infection and contamination
- You are confusing regulated cosmetic topical products with unregulated injectable research material
Safety
Common side effects
For injected/research use: not well characterized in humans. Topical cosmetic forms may cause local irritation or redness in some users
Serious risks
- Unregulated purity, sterility, and dosing of research-grade injectable product
- Copper overload/toxicity with systemic exposure, especially in people with copper-handling disorders
- Unknown long-term systemic effects in humans
- Injection-related infection and contamination risk
Who should avoid it
- Anyone using injectable forms without direct medical supervision
- Pregnancy and breastfeeding
- People with Wilson's disease or other copper-metabolism disorders
- People with known copper sensitivity
Pregnancy & breastfeeding
Avoid — no safety data for injectable use.
Choosing a product
Be skeptical of
- 'Proven' anti-aging, hair-regrowth, or wound-healing claims from injection in humans
- Vendors selling 'for research use only' injectable product for human use
- Conflating regulated cosmetic topical evidence with injectable systemic use
Track GHK-Cu (Copper Peptide) with Pilora
Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.
Coming to App StoreDisclaimer: This compound is not approved by the FDA for human use and is not a dietary supplement. This page is an educational review of available research — much of it preclinical or early-stage — not a recommendation to use it. Consumer product quality is unregulated. Consult a qualified clinician.