Bremelanotide vs Ibutamoren
Head-to-head comparison of Bremelanotide (Bremelanotide (PT-141), cyclic melanocortin receptor agonist) and Ibutamoren (Ibutamoren mesylate (MK-677)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Bremelanotide | Ibutamoren |
|---|---|---|
| Category | Sexual Health | Growth Hormone |
| Full Name | Bremelanotide (PT-141), cyclic melanocortin receptor agonist | Ibutamoren mesylate (MK-677) |
| Molecular Weight | 1025.2 Da | N/A |
| Half-Life | about 2.7 h | about 24 hours |
| Amino Acids | 7 | N/A |
| Typical Dose | 1.75 mg | 10-25 mg/day |
| Route | Subcutaneous | Oral |
| Purity | ≥98% | ≥98% |
| Studies Count | 200 | 180 |
| Research Status | Clinical | Clinical |
Bremelanotide Benefits
- ✓increases sexual desire
- ✓supports arousal
- ✓may improve erectile response
- ✓on-demand use
Ibutamoren Benefits
- ✓raises GH/IGF-1
- ✓increases appetite
- ✓supports lean mass retention
- ✓oral non-peptide secretagogue
Bremelanotide Dosing
1.75 mg subcutaneous PRN|administer about 45 minutes before activity|max 1 dose per 24 hours
Ibutamoren Dosing
10-25 mg orally once daily|take consistently at the same time each day|monitor fasting glucose and edema in longer studies
Bremelanotide Side Effects
- ⚠nausea
- ⚠flushing
- ⚠headache
- ⚠transient blood pressure increase
Ibutamoren Side Effects
- ⚠increased appetite
- ⚠water retention/edema
- ⚠somnolence or lethargy
Research Overview
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.
Ibutamoren
Clinical studies show oral ibutamoren reliably elevates GH and IGF-1 over 24 hours with once-daily dosing. Body composition and appetite effects vary by population, and development has been limited by metabolic side effects.
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