IGF-1 DES vs Bremelanotide
Head-to-head comparison of IGF-1 DES (Des(1-3) Insulin-like Growth Factor 1) and Bremelanotide (Bremelanotide (PT-141), cyclic melanocortin receptor agonist) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | IGF-1 DES | Bremelanotide |
|---|---|---|
| Category | Growth Hormone | Sexual Health |
| Full Name | Des(1-3) Insulin-like Growth Factor 1 | Bremelanotide (PT-141), cyclic melanocortin receptor agonist |
| Molecular Weight | 7365 Da | 1025.2 Da |
| Half-Life | ~20-30 minutes | about 2.7 h |
| Amino Acids | 67 | 7 |
| Typical Dose | — | 1.75 mg |
| Route | — | Subcutaneous |
| Purity | >98% | ≥98% |
| Studies Count | 65 | 200 |
| Research Status | Active Research | Clinical |
IGF-1 DES Benefits
- ✓Highly potent localized muscle growth, enhanced protein synthesis, satellite cell proliferation, does not bind to IGFBPs, rapid onset
Bremelanotide Benefits
- ✓increases sexual desire
- ✓supports arousal
- ✓may improve erectile response
- ✓on-demand use
IGF-1 DES Dosing
50-150 mcg per injection site bilaterally post-workout. 4-6 week cycles due to potency. Multiple daily injections in research.
Bremelanotide Dosing
1.75 mg subcutaneous PRN|administer about 45 minutes before activity|max 1 dose per 24 hours
IGF-1 DES Side Effects
- ⚠Hypoglycemia (dose-dependent), localized swelling, shorter duration limits systemic exposure compared to IGF-1 LR3.
Bremelanotide Side Effects
- ⚠nausea
- ⚠flushing
- ⚠headache
- ⚠transient blood pressure increase
Research Overview
IGF-1 DES
Missing first three amino acids (Gly-Pro-Glu) eliminates IGFBP binding, resulting in 100% bioavailable IGF-1R stimulation. Activates PI3K/Akt/mTOR for protein synthesis and satellite cell proliferation.
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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