GHK-Cu vs Epithalon
GHK-Cu and Epithalon are the two most discussed longevity peptides. Both target aging but through completely different mechanisms — one repairs and regenerates tissue, the other targets the molecular clock itself.
| Metric | GHK-Cu | Epithalon |
|---|---|---|
| Category | Longevity | Longevity |
| Default Unit | mcg | mg |
| Vial Sizes | 5, 10, 50, 100 | 10, 20, 50 |
| Dose Range | 200–2000 mcg | 5–10 mg |
| Frequency | Daily | Daily, 10–20 day cycles |
| Stability | 28 days | 28 days |
| Powder Storage | Freezer −20°C | Freezer −20°C |
| Reconstituted | Fridge 2–8°C | Fridge 2–8°C |
Mechanism
GHK-Cu is a copper peptide that modulates 4,000+ genes involved in tissue repair, collagen production, and antioxidant defense. It works at the cellular repair level. Epithalon activates telomerase to rebuild telomeres — the protective chromosome caps that shorten with age. It works at the chromosomal level.
Visible vs Invisible Effects
GHK-Cu produces visible results: improved skin quality, wound healing, hair growth, reduced wrinkles. These effects are noticeable within weeks. Epithalon's effects are largely invisible — telomere lengthening happens at the molecular level and may not produce immediately noticeable changes, though some users report improved sleep quality and energy.
Dosing Protocols
GHK-Cu: 200–2,000 mcg daily, ongoing. Can also be used topically. Epithalon: 5–10 mg daily for 10–20 days, cycled 1–2 times per year. GHK-Cu is a daily-use peptide; Epithalon is a periodic-cycle peptide.
⚖️ The Verdict
They're complementary, not competitive. GHK-Cu for daily tissue maintenance and visible anti-aging benefits. Epithalon for periodic telomerase activation targeting biological aging at the chromosomal level. Many longevity protocols include both.
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