How people get it: Over the counter in skin creams and serums. Injectable forms are sold online, not approved for use in people.
FDA status, evidence and safety
CosmeticIn skin creams and serums; injections sold online
- FDA status
- Not an FDA-approved drug; used in cosmetics. For pharmacies, the FDA lets GHK-Cu be used in non-injected forms while it decides (its “category 1”), and plans to consult its advisory committee by the end of February 2027. Injected GHK-Cu was on its safety-risk list until the nomination was withdrawn. PubMed ↗FDA compounding list ↗FDA safety-risk list ↗
- What's changing
- The FDA plans to ask its compounding advisory committee about GHK-Cu by the end of February 2027. See what's changing →
- In people so far
- Safety
- The FDA says injected GHK-Cu may cause immune reactions, and there is little data on its safety in people. FDA safety-risk list ↗
- A 2026 review lists GHK-Cu among unapproved peptides marketed directly to patients. PubMed ↗
- In sport
- Not named on the World Anti-Doping Agency's 2026 Prohibited List. WADA ↗
One of the peptides we follow. We don't give doses or say where to buy. Talk to your doctor before trying any of them.
The basics
We're still gathering this from reference sources like the NIH and MedlinePlus. Sections appear here once every sentence is checked against its source.
What it is
Not enough reliable information yet.
How it's thought to work
Not enough reliable information yet.
What people use it for
Not enough reliable information yet.
What the research has found so far
On GHK-Cu and aging, PubMed lists 1 trial in people, 2 studies that watched people over time, 12 animal and lab studies. See the counts and searches
Stage 2 because 1 published trial and 4 registered trials in people have been found, but no large ones yet.
A stage shows how far research has got, not whether it will work for you. How stages work
Side effects and risks
Not enough reliable information yet.
Who should be careful, and drug interactions
Not enough reliable information yet.
What to expect: results and how long they take
Not enough reliable information yet.
Amounts used in studies
What studies or labels describe, not a recommendation.
Not enough reliable information yet.
Roughly what it costs
We don't have prices for this yet.
Questions to ask your doctor
- Is GHK-Cu a sensible option for me, given my health and the medicines I take?
- Could GHK-Cu interact with any medicine or supplement I already take?
- What side effects should I watch for, and when should I stop or call you?
- Would GHK-Cu be used for its approved purpose, or off-label for aging?
- How would we tell whether it is helping, and when should we review it?
This is general information gathered from the sources listed, not medical advice. Talk to your doctor before starting anything new.
What experts say
No expert views collected yet. Each one we add names the person and links to where they said it.
Recent research
Testing whether copper peptide stays stable inside liposomes in skin creams
Scientists checked if a copper peptide stayed packed inside tiny fat bubbles in creams and serums.
Review finds GHK-Cu promising in lab and animal studies but unproven in people
Authors reviewed studies of GHK-Cu, a copper-peptide, across labs, animals, small human tests, and drug-delivery work.
Review of copper peptide GHK-Cu studies finds many lab results but few human trials
Researchers read 64 studies on GHK-Cu, a copper-linked peptide, and found much lab and animal work.
Review of a copper peptide used in skin treatments
Researchers reviewed 20 studies on GHK-Cu, a copper peptide, for skin and beauty uses.
Gel dressing breaks down sugar and adds oxygen in infected diabetic wounds
Researchers built a gel that lowers glucose and releases oxygen in wounds.
A skin mix with GHK-Cu may help wrinkles and skin barrier in tests
Researchers tested a mix of a ferment extract and a copper peptide for skin aging.
Trials
None of the registered trials of GHK-Cu is one we have linked as aging-related yet.
ClinicalTrials.gov lists 4 registered trials that mention GHK-Cu, for any condition (the count in The science below). Here we show the ones about aging. See them all ↗
The science
Counted from PubMed and ClinicalTrials.gov on Oct 30, 2026, using one search for GHK-Cu in relation to aging. Each link opens the exact search.
- Randomized trials in people
- 1 search ↗
- Large trials (multicenter or phase 3)
- 0 search ↗
- Phase 3 trials
- 0 search ↗
- Trials in people
- 1 search ↗
- Studies that watched people over time
- 2 search ↗
- Animal and lab studies
- 12 search ↗
- Registered trials
- 4 search ↗
PubMed search used
("GHK-Cu"[tiab] OR "copper tripeptide"[tiab] OR "copper peptide"[tiab] OR "copper peptides"[tiab] OR "glycyl-L-histidyl-L-lysine"[tiab]) AND (photoaging[tiab] OR "skin aging"[tiab] OR "skin ageing"[tiab] OR photodamage[tiab] OR "Skin Aging"[mh] OR aging[tiab] OR ageing[tiab] OR longevity[tiab] OR healthspan[tiab] OR "older adults"[tiab] OR "older people"[tiab] OR elderly[tiab] OR "Aged"[mh] OR skin[tiab] OR wrinkle*[tiab])
Counts are search results, so they include some records that only mention GHK-Cu. How we count
Cite or share this page
Longevity Progress. (n.d.). GHK-Cu (copper peptide): Research stage and evidence. Retrieved October 30, 2026, from https://longevityprogress.com/treatments/ghk-cu
<iframe src="https://longevityprogress.com/embed/stage/ghk-cu" title="GHK-Cu (copper peptide): research stage on Longevity Progress" width="340" height="72" style="border:0" loading="lazy"></iframe>
The badge shows this treatment's current research stage and links back here. It updates by itself when the stage changes.