Anti-aging peptides

Epithalon vs GHK-Cu

Comparing Epithalon and GHK-Cu across evidence, dosing, mechanisms, and research areas.

vs
Category
longevity
longevity
Molecular weight
390.35 g/mol
340.38 g/mol
Half-life
~30 minutes (estimated, limited pharmacokinetic data)
~1 hour (injectable); variable topical absorption
Admin routes
subcutaneousintravenous
topicalsubcutaneousintradermal
Research areas
Telomere extensionAnti-agingPineal gland functionMelatonin regulationWound healingDiabetic retinopathy
Skin rejuvenation / anti-agingWound healingHair growth / follicle stimulationLung fibrosis / COPD repairAnti-inflammatoryBone regenerationNerve regeneration
Typical dosing
5000–10000 mcg · 1x daily · 10-20 days, 2-3x per year
200–500 mcg · 1x daily (injectable); 1-2x daily (topical) · 4-8 weeks (injectable); ongoing (topical)
FDA status
Not FDA-approved
Not FDA-approved as drug. Available OTC in cosmetic formulations. Category 1 under 503A bulk drug substance framework (compoundable) for injectable use.
WADA status
Not listed
Not prohibited (as of 2026)
PubMed studies
140
163