Gonadorelin vs Melanotan II
Side-by-side comparison of key properties, dosing, and research.
Sexual Health & LibidoAnti-Aging & Longevity
GonadorelinSexual Health & Libido
Melanotan II- 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.
- Melanotan II is a synthetic analog of alpha-melanocyte-stimulating hormone (α-MSH) that stimulates melanin production (skin tanning), suppresses appetite, and enhances sexual function. It is not FDA-approved and has significant safety concerns including mole changes and cardiovascular effects.
- Half-Life
- ~2–4 minutes (extremely short); pulsatile dosing required to avoid desensitization
- 1–2 hours
- Admin Route
- SubQ, Intranasal
- SubQ
- Research
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- —
- Typical Dose
- 100 mcg
- 0.25–0.5 mg
- Frequency
- Twice daily (every 12 hours)
- Once 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)
- Promotes skin tanning and melanin production
- Reduces UV exposure needed to tan
- Enhances libido and sexual function
- May suppress appetite
- Faster, deeper tan development
- Longer-lasting tan maintenance
- Potential photoprotective effects
- Side Effects
- Injection site reactions
- Headache
- Nausea at initiation
- Tachycardia (rare)
- +1 more
- Nausea (very common, especially in first days)
- Facial flushing
- Spontaneous erections in men
- Darkening or changes in existing moles (monitor closely)
- +3 more
- Stacks With
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