Secretin vs PT-141
Head-to-head comparison of Secretin (Human Secretin) and PT-141 (Bremelanotide (Melanocortin Receptor Agonist)) — benefits, dosing, side effects, research data, and where to buy.
| Property | Secretin | PT-141 |
|---|---|---|
| Category | Gastrointestinal | Performance |
| Full Name | Human Secretin | Bremelanotide (Melanocortin Receptor Agonist) |
| Molecular Weight | 3055.4 Da | 1,025.2 Da |
| Half-Life | 5-7 minutes | ~2.7 hours |
| Amino Acids | 27 | 7 |
| Typical Dose | 0.2 mcg/kg IV | 1.75 mg |
| Route | Intravenous | SC |
| Purity | ≥98% | — |
| Studies Count | 800 | 178 |
| Research Status | Clinical | FDA Approved |
Secretin Benefits
- ✓stimulates-pancreatic-secretion
- ✓supports-bicarbonate-release
- ✓aids-duodenal-pH-control
- ✓helps-digestive-coordination
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
Secretin Dosing
0.2 mcg/kg IV diagnostic dose|research infusion protocols|short bolus administration
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
Secretin Side Effects
- ⚠flushing
- ⚠nausea
- ⚠abdominal-cramping
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
Research Overview
Secretin
Secretin is a classic GI hormone with extensive physiology literature and established diagnostic use. It remains important for studying pancreatic secretory function, biliary responses, and duodenal feedback.
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.
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