PinnyPeptide

Epithalon vs GHK-Cu

Side-by-side comparison: effects, dosing ranges, side effects, regulatory status, and reconstitution.

Peptide A

Epithalon

Longevity

Synthetic pineal tetrapeptide that activates telomerase and modulates melatonin production.

Peptide B

GHK-Cu

Cosmetic

Copper-binding tripeptide with potent wound-healing, skin-remodeling, and gene-regulatory properties.

Typical vial

10 mg

Typical dose

5000-10000 mcg

Half-life

~30 minutes (short half-life but biological effects persist due to gene expression changes)

FDA status

Not FDA approved for human use. No clinical trials submitted…

Typical vial

50 mg

Typical dose

200-500 mcg

Half-life

~30-60 minutes (plasma)

FDA status

Not FDA approved as a drug. Widely used as a cosmetic ingred…

Epithalon effects

  • Activates telomerase enzyme to elongate telomeres
  • Restores melatonin production in the pineal gland
  • Regulates neuroendocrine function and circadian rhythms
  • Reduces incidence of spontaneous tumors in animal models
  • Modulates gene expression patterns associated with aging

GHK-Cu effects

  • Stimulates collagen and elastin synthesis for skin rejuvenation
  • Promotes wound healing and tissue remodeling
  • Enhances angiogenesis and blood vessel formation
  • Modulates expression of over 4,000 genes involved in tissue repair
  • Provides antioxidant defense via superoxide dismutase activation
  • Reduces fine lines, wrinkles, and photodamage

Epithalon side effects

  • Mild injection site irritation
  • Occasional drowsiness (related to melatonin effects)
  • Rare mild headache
  • Transient changes in sleep patterns

GHK-Cu side effects

  • Mild skin irritation with topical use (uncommon)
  • Injection site discomfort with subcutaneous administration
  • Uncommon metallic taste
  • Rare contact sensitivity in predisposed individuals

Epithalon dosing ranges

Anti-aging and telomere support

5-10 mg · Once daily (SubQ) · 10-20 days, repeated 1-2 times per year

GHK-Cu dosing ranges

Skin rejuvenation (topical)

1-2% concentration · Once or twice daily · Ongoing

Systemic tissue support (SubQ)

200-500 mcg · Once daily · 4-6 weeks

Wound healing support (SubQ)

200-500 mcg · Once daily near wound site · 2-4 weeks

Full Epithalon guide → Full GHK-Cu guide →

Epithalon vs GHK-Cu — common questions

What is the difference between Epithalon and GHK-Cu?

Epithalon: Synthetic pineal tetrapeptide that activates telomerase and modulates melatonin production. Typical dose 5000-10000 mcg. GHK-Cu: Copper-binding tripeptide with potent wound-healing, skin-remodeling, and gene-regulatory properties. Typical dose 200-500 mcg. Both fall under the Longevity and Cosmetic categories.

Can you stack Epithalon and GHK-Cu?

Stacking Epithalon with GHK-Cu is a protocol-design question best raised with a clinician — it depends on your goal, current bloodwork, and whether both peptides target overlapping mechanisms. Both peptides should be tracked independently with separate injection sites and timing. PinnyPeptide supports multi-peptide stacks with automatic injection site rotation.

Which is dosed more frequently, Epithalon or GHK-Cu?

Epithalon is typically dosed: Once daily (SubQ) for Anti-aging and telomere support. GHK-Cu is typically dosed: Once or twice daily for Skin rejuvenation (topical); Once daily for Systemic tissue support (SubQ); Once daily near wound site for Wound healing support (SubQ).

Are Epithalon and GHK-Cu FDA approved?

Epithalon: Not FDA approved for human use. No clinical trials submitted to the FDA. GHK-Cu: Not FDA approved as a drug. Widely used as a cosmetic ingredient without requiring drug approval for topical formulations.

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