PT-141 vs GHRP-2
Head-to-head comparison of PT-141 (Bremelanotide (Melanocortin Receptor Agonist)) and GHRP-2 (Growth Hormone Releasing Peptide-2) — benefits, dosing, side effects, research data, and where to buy.
| Property | PT-141 | GHRP-2 |
|---|---|---|
| Category | Performance | Performance |
| Full Name | Bremelanotide (Melanocortin Receptor Agonist) | Growth Hormone Releasing Peptide-2 |
| Molecular Weight | 1,025.2 Da | 817.97 Da |
| Half-Life | ~2.7 hours | ~25 minutes |
| Amino Acids | 7 | 6 |
| Typical Dose | 1.75 mg | 100-300 mcg |
| Route | SC | SC / IV |
| Purity | — | — |
| Studies Count | 178 | 172 |
| Research Status | FDA Approved | Approved (Japan) |
PT-141 Benefits
- ✓Enhances sexual desire and arousal
- ✓Works through CNS (not vascular)
- ✓FDA-approved for HSDD
- ✓Effective for both men and women
- ✓Does not require sexual stimulation to work
GHRP-2 Benefits
- ✓Potent GH release (stronger than GHRP-6)
- ✓Less appetite stimulation than GHRP-6
- ✓Improved body composition
- ✓Enhanced deep sleep quality
- ✓Cytoprotective properties
PT-141 Dosing
Standard: 1.75 mg SC, 45 min before activity|Max frequency: Once every 24 hours|Max: 8 doses per month|Men (off-label): 1-2 mg SC as needed
GHRP-2 Dosing
Standard: 100-300 mcg SC 2-3 times daily|Pre-bed: 100-200 mcg for GH pulse during sleep|Combined: 100 mcg with CJC-1295 for synergy|Cycle: 8-16 weeks, 4 weeks off
PT-141 Side Effects
- ⚠Common: Nausea (40%), flushing, headache, injection site reactions
- ⚠Moderate: Elevated blood pressure (transient), fatigue
- ⚠Serious: Focal hyperpigmentation with repeated use
- ⚠Contraindications: Uncontrolled hypertension, cardiovascular disease
GHRP-2 Side Effects
- ⚠Common: Mild appetite increase, water retention, tingling
- ⚠Moderate: Cortisol elevation at higher doses
- ⚠Rare: Prolactin increase, transient dizziness
- ⚠Better tolerated than GHRP-6 overall
Research Overview
PT-141
PT-141 has robust clinical evidence including multiple Phase III trials. FDA-approved in 2019. Unique mechanism of action through melanocortin-4 receptors in the brain. Well-characterized safety and efficacy profile.
GHRP-2
GHRP-2 has strong clinical evidence. Approved in Japan for diagnostic use. Multiple human studies confirm reliable GH stimulation with a favorable side effect profile compared to GHRP-6.
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