PT-141 (Bremelanotide) vs Sermorelin
Side-by-side comparison of key properties, dosing, and research.
Sexual Health & Libido
PT-141 (Bremelanotide)Growth Hormone PeptidesAnti-Aging & Longevity
Sermorelin- Summary
- PT-141 (Bremelanotide) is a cyclic peptide melanocortin receptor agonist that enhances sexual desire and arousal through central nervous system mechanisms. It is FDA-approved as Vyleesi for premenopausal women with hypoactive sexual desire disorder (HSDD).
- Sermorelin is a bioidentical synthetic peptide comprising the first 29 amino acids of naturally occurring GHRH. It is FDA-approved for diagnostic use and widely prescribed off-label for anti-aging, stimulating growth hormone production in a natural pulsatile pattern that mimics the body's own rhythm.
- Half-Life
- 2–3 hours
- 10–20 minutes
- Admin Route
- SubQ
- SubQ
- Research
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- Typical Dose
- 0.5–1.75 mg
- 200–500 mcg
- Frequency
- As needed (not daily)
- 5–7 days per week
- Key Benefits
- Enhances sexual desire and libido in both men and women
- Improves arousal through central nervous system activation
- Effective for psychological erectile dysfunction
- Works for female sexual arousal disorder
- May improve sexual satisfaction and intensity
- Fast-acting — effects within 45–60 minutes
- FDA-approved for HSDD in premenopausal women
- Increases energy and vitality
- Improves body composition (more muscle, less fat)
- Enhances skin thickness and elasticity
- Strengthens immune system
- Improves sleep quality and REM sleep
- Supports bone density
- Enhances mental clarity and focus
- Safer than exogenous HGH — respects natural feedback loops
- FDA-approved for GH diagnostic use
- Side Effects
- Nausea (most common — 40% of users in clinical trials)
- Facial flushing and warmth
- Transient blood pressure changes (typically increase then normalize)
- Headache
- +2 more
- Injection site irritation
- Flushing
- Headache
- Dizziness
- +2 more
- Stacks With
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