Peptide United

Research comparison

Epithalon vs GHK-Cu

Side-by-side comparison of research status, mechanisms, pharmacokinetics, and administration routes.

Epithalon

Epitalon · Epithalamin · AEDG · Ala-Glu-Asp-Gly

Preclinical

Epithalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) modeled on the endogenous pineal peptide epithalamin. It is one of the most extensively studied longevity peptides, with Russian research demonstrating telomerase activation, telomere elongation, melatonin normalization, and extended lifespan in animal models. Long-term human studies show reduced all-cause mortality rates and improved biomarkers of aging.

Research Status

Preclinical Research

Half-Life

Short; longer-term effects persist after cyclic dosing

Molecular Formula

Molecular Weight

CAS Number

307297-39-8

Research Categories

Anti-Aging & Longevity, Sleep & Circadian

Routes of Administration

Subcutaneous (SQ)Intramuscular (IM)
GHK-Cu

Copper Peptide GHK · Glycyl-L-histidyl-L-lysine copper

Preclinical

GHK-Cu is a naturally occurring copper-binding tripeptide found in human plasma, saliva, and urine. Research demonstrates it stimulates collagen, elastin, and glycosaminoglycan synthesis, promotes wound healing, reduces inflammation, and activates protective antioxidant genes. Plasma levels decline with age, making it a significant anti-aging research target.

Research Status

Preclinical Research

Half-Life

Rapid — minutes in plasma; topical activity persists longer

Molecular Formula

C₁₄H₂₄CuN₆O₄

Molecular Weight

340.84 Da (free ligand)

CAS Number

89030-95-5

Research Categories

Healing & Recovery, Skin & Cosmetic, Anti-Aging & Longevity

Routes of Administration

Subcutaneous (SQ)Topical

Full mechanism comparison

Mechanism of action, pharmacokinetics, and research findings comparison available on the Researcher plan.

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