Kisspeptin-52 vs Bremelanotide
Head-to-head comparison of Kisspeptin-52 (Kisspeptin-52 (KISS1-derived peptide fragment)) and Bremelanotide (Bremelanotide (PT-141), cyclic melanocortin receptor agonist) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Kisspeptin-52 | Bremelanotide |
|---|---|---|
| Category | Sexual Health | Sexual Health |
| Full Name | Kisspeptin-52 (KISS1-derived peptide fragment) | Bremelanotide (PT-141), cyclic melanocortin receptor agonist |
| Molecular Weight | ≈5,800 Da | 1025.2 Da |
| Half-Life | Minutes to ~1 hour | about 2.7 h |
| Amino Acids | 52 | 7 |
| Typical Dose | 0.1-3.0 nmol/kg | 1.75 mg |
| Route | Intravenous/Subcutaneous | Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 120 | 200 |
| Research Status | Clinical research | Clinical |
Kisspeptin-52 Benefits
- ✓stimulates GnRH signaling
- ✓supports LH/FSH release
- ✓aids ovulation research
- ✓maps reproductive-axis function
Bremelanotide Benefits
- ✓increases sexual desire
- ✓supports arousal
- ✓may improve erectile response
- ✓on-demand use
Kisspeptin-52 Dosing
0.1-3.0 nmol/kg IV bolus|0.1-1.0 nmol/kg SC|protocol-dependent infusion
Bremelanotide Dosing
1.75 mg subcutaneous PRN|administer about 45 minutes before activity|max 1 dose per 24 hours
Kisspeptin-52 Side Effects
- ⚠flushing
- ⚠nausea
- ⚠headache
Bremelanotide Side Effects
- ⚠nausea
- ⚠flushing
- ⚠headache
- ⚠transient blood pressure increase
Research Overview
Kisspeptin-52
Human and animal studies show kisspeptin-52 can acutely increase gonadotropin secretion and activate the hypothalamic-pituitary-gonadal axis. It has been explored in fertility research and assisted-reproduction settings as a way to trigger endogenous reproductive hormone release.
Bremelanotide
Human studies and approval data support meaningful effects on sexual desire in women, with a central mechanism involving melanocortin signaling. It is one of the most clinically relevant peptides in this category and is commonly used as the reference compound for PT-141-type research.
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