Gonadorelin vs Epithalon
Side-by-side comparison of key properties, dosing, and research.
Sexual Health & LibidoAnti-Aging & Longevity
GonadorelinAnti-Aging & Longevity
Epithalon- Summary
- Gonadorelin is the synthetic form of endogenous GnRH (gonadotropin-releasing hormone). It stimulates the pituitary to release LH and FSH, maintaining testicular function and testosterone production. Widely used alongside TRT to prevent testicular atrophy and preserve fertility.
- Epithalon is a synthetic tetrapeptide developed from the pineal gland extract Epithalamin by Russian scientist Dr. Vladimir Khavinson. It is one of the most researched longevity peptides, known for activating telomerase and extending telomere length — the molecular hallmarks of cellular aging.
- Half-Life
- ~2–4 minutes (extremely short); pulsatile dosing required to avoid desensitization
- 2–4 hours
- Admin Route
- SubQ, Intranasal
- SubQ, Sublingual
- Research
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- Typical Dose
- 100 mcg
- 5–10 mg total per cycle
- Frequency
- Twice daily (every 12 hours)
- 0.5–1 mg daily
- Key Benefits
- Maintains testicular size during TRT
- Preserves fertility and sperm production during testosterone use
- Stimulates endogenous LH/FSH production
- Maintains HPG axis function during exogenous hormone use
- Used for HCG-free TRT protocols
- Helps restart natural testosterone production (PCT)
- Activates telomerase enzyme, extending telomere length
- May slow cellular and biological aging
- Regulates melatonin production and circadian rhythms
- Improves sleep quality
- Powerful antioxidant properties
- May reduce incidence of age-related diseases
- Supports immune system function
- Studied for cancer prevention properties in animal models
- Side Effects
- Injection site reactions
- Headache
- Nausea at initiation
- Tachycardia (rare)
- +1 more
- Injection site irritation (mild)
- Temporary sleep changes during cycle (usually improves)
- Rare: fatigue
- Stacks With
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