GHK-Cu vs SS-31.
Quick Verdict
GHK-Cu is a copper peptide primarily researched for skin repair, anti-aging, wound healing, while SS-31 is a mitochondrial peptide studied for energy, recovery, neuroprotection.
Side-by-Side Analysis
| Dimension | GHK-Cu | SS-31 |
|---|---|---|
| Category | Copper Peptide | Mitochondrial Peptide |
| Mechanism | Copper delivery for collagen/elastin synthesis. | Mitochondrial protection. |
| Half-Life | ~30 minutes | ~4 hours |
| Route | SubQ | SubQ |
| Typical Dose | 2000–2000 mcg | 4000–4000 mcg |
| Frequency | 7x/wk | 7x/wk |
| Evidence Level | Moderate | Moderate |
| Indexed Studies | 20+ indexed | 20+ indexed |
| FDA Status | Research Only | Research Only |
| Lowest Price | $29.99 / 50mg via Amino Club | $75.00 / 10mg via Ascension Peptides |
| Per-mg Cost | $0.60/mg | $7.50/mg |
Mechanism of Action Comparison
How GHK-Cu Works
GHK-Cu GHK-Cu is a naturally occurring copper peptide studied for stimulating collagen production, accelerating wound healing, and reversing visible signs of skin aging.
Copper delivery for collagen/elastin synthesis. Activates tissue remodeling, attracts immune cells to injury sites. Levels decline significantly with age.
How SS-31 Works
SS-31 SS-31 (Elamipretide) is a mitochondria-targeting peptide studied for protecting heart and muscle cells from energy failure, currently in FDA Fast Track development for heart failure.
Mitochondrial protection. Selectively concentrates in the inner mitochondrial membrane where it stabilizes cardiolipin for efficient electron transport chain function.
Key Mechanistic Difference
GHK-Cu operates as a copper peptide, while SS-31 functions as a mitochondrial peptide — these are fundamentally different pharmacological approaches. SS-31 has a significantly longer half-life (~4 hours) compared to GHK-Cu (~30 minutes), which impacts dosing frequency and sustained activity.
Research Evidence
GHK-Cu
20 studies- GHK-Cu skin regeneration and anti-aging effectsPickart (J. Cosmetic Dermatol.) reviews GHK-Cu's role in stimulating collagen, elastin, and glycosaminoglycan synthesis,…Moderate
- GHK-Cu gene expression: up/down-regulation of 4,000+ genesPickart et al. show GHK-Cu regulates expression of 4,000+ human genes, shifting patterns from diseased to healthy states…Preclinical
- GHK-Cu wound healing and tissue remodeling reviewComprehensive review demonstrating GHK-Cu accelerates wound closure, promotes angiogenesis, reduces scarring, and exhibi…Moderate
SS-31
20 studies- SS-31 (Elamipretide) clinical trials overviewSzeto (Br. J. Pharmacol.): Comprehensive review of elamipretide mechanism and clinical trial results in heart failure, m…Moderate
- Elamipretide stabilizes cardiolipin and cristae structureBirk et al. (Pharmaceuticals): Detailed mechanism review showing elamipretide binds cardiolipin, stabilizes mitochondria…Preclinical
- Elamipretide attenuates age-related cardiac protein modificationsStudy demonstrating elamipretide can reverse age-associated post-translational heart protein modifications, restoring mi…Preclinical
Vendor Pricing
· Affiliate links · Prices verified 2026GHK-Cu
4 vendorsSS-31
1 vendorAffiliate disclosure: PeptiDex may earn a commission from purchases via vendor links at no extra cost to you. See our methodology.
Frequently Asked Questions
Can I take GHK-Cu and SS-31 together?▼
No direct interaction data is available for this specific pair. They target different receptor systems, suggesting they could potentially be combined, but no published protocol validates this combination.
Which has more research evidence — GHK-Cu or SS-31?▼
GHK-Cu has 20 indexed studies (highest evidence: Moderate). SS-31 has 20 indexed studies (highest evidence: Moderate). Both have comparable research coverage.
What is the price difference between GHK-Cu and SS-31?▼
At current verified vendor prices, GHK-Cu starts at $0.50/mg while SS-31 starts at $7.50/mg. Prices vary by vendor and vial size — see the full vendor comparison below.
Which is better for injury recovery — GHK-Cu or SS-31?▼
Both are researched for injury recovery. GHK-Cu addresses this via skin repair, anti-aging, wound healing. SS-31 approaches it through energy, recovery, neuroprotection. The optimal choice depends on your specific research protocol and which mechanism aligns with your objectives.
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Shared Research Goals
Research Use Only — Not Medical Advice
This comparison is provided for educational and research purposes only. It does not constitute medical, prescribing, or treatment advice. Clinical data cited here is sourced from published peer-reviewed trials and FDA labels. Consult a qualified healthcare professional before making any decisions about medications or research compounds. PeptiDex is an informational resource and does not sell pharmaceutical products.