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GHK-CU.
GHK-Cu. A naturally occurring copper-binding tripeptide that modulates gene expression across thousands of human genes, resetting tissue repair, collagen synthesis, and antioxidant defense toward patterns characteristic of younger biology. Your plasma carried it in abundance at twenty. By sixty, levels have dropped by as much as 60%. This is the remodeling signal your connective tissue has been losing.
*Clinician-prescribed. Ships from a licensed U.S. pharmacy.
The formulation.
| Peptide | GHK-Cu (Copper Tripeptide-1) |
| Derived From | Naturally occurring copper-binding tripeptide |
| Concentration | 10 mg/ml |
| Format | Sterile injectable solution |
| Route | Subcutaneous |
| Pharmacy | Licensed U.S. Compounding Pharmacy |
GHK-Cu exists naturally in human plasma at about 200 ng/ml at age 20. By age 60 that level drops below 80 ng/ml. The peptide activates over 4,000 genes involved in tissue remodeling, including the pathways that produce collagen, elastin, and decorin. At 10 mg/ml, this formulation delivers the peptide at concentrations that research has associated with measurable increases in collagen synthesis and wound closure rates. The decline is real. The signal can be restored.
The mechanism
The Remodeling Signal You Have Been Losing.
GHK-Cu does not simply increase collagen quantity. It modulates both synthesis and controlled degradation through regulation of matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs). This dual regulation means GHK-Cu promotes remodeling rather than accumulation: clearing damaged or disorganized matrix while directing construction of properly structured replacement tissue.
Gene expression studies show GHK-Cu modulates the activity of over 4,000 human genes, resetting expression patterns toward profiles characteristic of younger tissue. This transcriptional reprogramming affects antioxidant defense, collagen synthesis, growth factor signaling, and inflammatory response simultaneously.
Complete your intake
No appointments. No waiting rooms.
Your prescription ships
Compounded by a licensed U.S. pharmacy. Cold-shipped.
Run the course
Follow your provider's dosing schedule.
Safety
What to expect+
GHK-Cu is well tolerated. It is a naturally occurring compound present in human plasma, saliva, and urine, which contributes to its favorable safety profile.
Common effects include injection site irritation and occasional mild bruising due to the copper content.
Nausea is rare. These effects typically resolve within 24 to 48 hours.
Who should not use this+
Do not use if you are pregnant or breastfeeding.
Do not use if you have active cancer, chronic kidney disease, or untreated cardiovascular conditions.
Do not use if you are hypersensitive to peptide-based medications or copper-containing compounds.
Not intended for individuals under 18.
Should be cycled or used under medical supervision, especially long-term.
Regulatory context+
GHK-Cu is a compounded formulation prepared under section 503A in a licensed U.S. compounding pharmacy. It requires a prescription from a licensed healthcare provider.
Frequently asked
What is GHK-Cu?+
GHK-Cu, or glycyl-L-histidyl-L-lysine copper, is a naturally occurring copper tripeptide first isolated from human plasma in 1973. It's the component researchers linked to younger tissue behavior when they studied plasma from young donors. Since your natural levels of it decline with age, it's used to help restore that signal.
How does GHK-Cu work?+
It doesn't just add collagen. It influences gene expression across thousands of human genes, steering collagen synthesis, tissue remodeling, and antioxidant defense toward patterns seen in younger tissue, and it prompts fibroblasts to produce collagen, elastin, and other structural components while regulating both build-up and controlled breakdown. The result is organized remodeling rather than simple accumulation.
What can I expect from GHK-Cu?+
Many people find the most visible change is in skin quality, with reports of improved texture, density, and reduced fine lines over a few weeks. It may also support broader tissue repair and help calm inflammation. These changes are described as structural rather than surface-level, but they're gradual and results vary from person to person.
Are there any side effects?+
GHK-Cu is well tolerated. The most common effects are injection site irritation and occasional mild bruising, partly due to the copper content, and nausea is rare. It's a naturally occurring compound found in human plasma, saliva, and urine, which contributes to its favorable safety profile.
How is GHK-Cu made and shipped?+
It starts with a short online medical intake, and if it's a fit, a licensed U.S. provider writes the prescription. From there it's compounded at a licensed 503A pharmacy and batch tested by a third party for sterility and potency. Then it's shipped cold-packed right to your door.
What's the best way to buy GHK-Cu?+
You've got two options. You can buy a one-time single vial, or you can go with the Build Your Stack subscription, which lets you mix and match the compounds in your monthly stack, starting at $189 per month. For ongoing use the stack is the better value, and you can pause, skip, or cancel anytime.
Stack your protocol.
A short course of work. Your cells carry it from there.
$219.00 · Clinician-prescribed · Ships from a licensed U.S. pharmacyThese statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Prescription products require an online consultation with a licensed provider who will determine if a prescription is appropriate.