Lutropin alfa vs Bremelanotide
Head-to-head comparison of Lutropin alfa (Recombinant Human Luteinizing Hormone Alfa) and Bremelanotide (Bremelanotide (PT-141), cyclic melanocortin receptor agonist) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Lutropin alfa | Bremelanotide |
|---|---|---|
| Category | Sexual Health | Sexual Health |
| Full Name | Recombinant Human Luteinizing Hormone Alfa | Bremelanotide (PT-141), cyclic melanocortin receptor agonist |
| Molecular Weight | 30,000 Da | 1025.2 Da |
| Half-Life | ~10-12 hours | about 2.7 h |
| Amino Acids | N/A | 7 |
| Typical Dose | 75-150 IU per dose | 1.75 mg |
| Route | Subcutaneous/Intramuscular | Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 420 | 200 |
| Research Status | Clinical | Clinical |
Lutropin alfa Benefits
- ✓stimulates Leydig cells
- ✓raises endogenous testosterone
- ✓supports testicular steroidogenesis
- ✓pairs with FSH for fertility
Bremelanotide Benefits
- ✓increases sexual desire
- ✓supports arousal
- ✓may improve erectile response
- ✓on-demand use
Lutropin alfa Dosing
75-150 IU SC/IM 2-3x weekly|adjust to testosterone response|combine with FSH when spermatogenesis support is needed
Bremelanotide Dosing
1.75 mg subcutaneous PRN|administer about 45 minutes before activity|max 1 dose per 24 hours
Lutropin alfa Side Effects
- ⚠injection-site reactions
- ⚠headache
- ⚠hormonal swings
Bremelanotide Side Effects
- ⚠nausea
- ⚠flushing
- ⚠headache
- ⚠transient blood pressure increase
Research Overview
Lutropin alfa
Lutropin alfa has been evaluated in fertility protocols to restore LH signaling and endogenous testosterone production. It is a direct research/clinical analogue for men with low gonadotropin drive.
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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