GHK-Cu (Copper Peptide)
A naturally occurring copper peptide your body already makes. Drives skin rejuvenation, wound healing, and anti-aging by boosting collagen and activating anti-aging genes.
Key Facts
- ClassificationGHK-Cu is a naturally occurring copper-binding tripeptide that modulates expression of ~4,000 human genes.
- Primary BenefitsSkin & Hair (10/10) · Longevity (7/10) · Inflammation (7/10)
- AdministrationInjection, Topical
- Typical Dose1-3 mg daily subq, or apply it directly to the skin as a topical. Cycle for 4-8 weeks.
- Evidence StrengthModerate — 20 peer-reviewed studies referenced · Community sentiment 9/10
- Stacks Well WithBPC-157, TB-500, Epithalon, SS-31
- Legal StatusResearch Use Only · not prescribable in US
Quick Facts
- From price
- $30
- Type
- peptide
- Administration
- Injection, Topical
- Evidence
- moderate
- Studies referenced
- 20
- Community sentiment
- 9/10
- Stacks with
- 5 peptides
- Regulatory
- Research Use Only
Top benefits
Week 1–2
Skin hydration improvement if using topically. Mild anti-inflammatory effects. Subtle changes in skin texture beginning.
Week 3–6
Visible improvement in skin firmness, fine lines, and overall complexion. Faster healing of minor cuts and abrasions.
Week 8+
Significant collagen remodeling and skin tightening. Possible hair follicle stimulation based on limited preclinical data. Reduced hyperpigmentation and age spots.
Common Side Effects
Scientific Overview
GHK-Cu is a naturally occurring copper-binding tripeptide that modulates expression of ~4,000 human genes. Upregulates collagen synthesis (COL1A1, COL3A1), stem cell markers, and antioxidant enzymes while suppressing inflammation-associated genes. Plasma levels decline from ~200 ng/mL at age 20 to ~80 ng/mL by age 60.
Dosing
1-3 mg daily subq, or apply it directly to the skin as a topical. Cycle for 4-8 weeks.
Reconstitution, storage, injection sites & timing
Benefit Profile
| Vendor | Variant | Price | |
|---|---|---|---|
| Limitless Biotech | 50mg | $38.99 | Code: PSTACK10Buy |
| Skye Peptides | 50mg | $34.99 | |
| Skye Peptides | 100mg | $54.99 | |
| Swiss Chems ⚠ FDA warning letter received late 2024 | 50mg | $36.95 | |
| Amino Asylum ⚠ Reported federal raid in 2025 | 50mg | $29.99BEST | |
| Peptide Sciences ✕ Announced voluntary shutdown — stock availability may be limited or unavailable. Pricing data may be outdated. | 50mg | $42.00 | Out of stock |
Stacks Well With
BPC-157
A healing compound from human gastric juice. The most extensively studied repair peptide in animal models, with strong preclinical data for tissue repair, gut restoration, and anti-inflammatory effects. Human clinical data remains limited.
TB-500 (Thymosin Beta-4)
Synthetic Thymosin Beta-4, a protein that drives cell migration and tissue repair. Promotes angiogenesis, reduces inflammation, and supports tissue remodeling body-wide. Popular for injury recovery.
Epithalon (Epitalon)
Longevity peptide from the pineal gland. Activates telomerase to protect DNA caps and restores melatonin production. Russian studies showed 11-16% lifespan increase in animals.
SS-31 (Elamipretide)
Engineered to target inner mitochondrial membrane via cardiolipin binding. Stabilizes cristae, improves ATP production, and reduces oxidative stress. FDA-approved for Barth syndrome (as Forzinity) — the first FDA-approved mitochondria-targeted therapy.
SNAP-8
Topical anti-wrinkle peptide that reduces nerve signals causing facial muscle contraction (similar concept to Botox). Smooths expression lines with regular use.
Compare
BPC-157 and GHK-Cu both promote tissue repair, but they operate through different mechanisms and are suited to different applications. BPC-157 is a gastric-derived peptide focused on deep tissue healing, while GHK-Cu is a naturally occurring copper tripeptide with strong evidence for skin remodeling and gene expression modulation.
Epithalon vs GHK-CuEpithalon and GHK-Cu are both studied in the context of aging, but they target entirely different aging mechanisms. Epithalon focuses on telomere maintenance at the DNA level, while GHK-Cu modulates gene expression and tissue remodeling. They represent "inside-out" approaches to anti-aging research.
TB-500 vs GHK-CuTB-500 and GHK-Cu are both tissue repair peptides, but they serve different roles in the healing process. TB-500 focuses on recruiting repair cells and building new blood vessels, while GHK-Cu strengthens tissue quality through collagen remodeling and gene expression changes.
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