IGF-1 DES vs hGHRH(1-37)OH
Head-to-head comparison of IGF-1 DES (Des(1-3) Insulin-like Growth Factor 1) and hGHRH(1-37)OH (Human growth hormone-releasing factor (1-37) hydroxyl) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | IGF-1 DES | hGHRH(1-37)OH |
|---|---|---|
| Category | Growth Hormone | Growth Hormone |
| Full Name | Des(1-3) Insulin-like Growth Factor 1 | Human growth hormone-releasing factor (1-37) hydroxyl |
| Molecular Weight | 7365 Da | N/A |
| Half-Life | ~20-30 minutes | 5-20 minutes |
| Amino Acids | 67 | 37 |
| Typical Dose | — | 1-2 mcg/kg |
| Route | — | Subcutaneous/IV |
| Purity | >98% | ≥98% |
| Studies Count | 65 | 60 |
| Research Status | Active Research | Clinical Research |
IGF-1 DES Benefits
- ✓Highly potent localized muscle growth, enhanced protein synthesis, satellite cell proliferation, does not bind to IGFBPs, rapid onset
hGHRH(1-37)OH Benefits
- ✓GH release studies
- ✓minimal-sequence mapping
- ✓receptor pharmacology
- ✓peptide stability research
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.
hGHRH(1-37)OH Dosing
1-2 mcg/kg SC or IV bolus|acute stimulation with serial GH assays|short-course research administration with biomarker monitoring
IGF-1 DES Side Effects
- ⚠Hypoglycemia (dose-dependent), localized swelling, shorter duration limits systemic exposure compared to IGF-1 LR3.
hGHRH(1-37)OH Side Effects
- ⚠flushing
- ⚠headache
- ⚠transient fatigue
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.
hGHRH(1-37)OH
Human GHRF(1-37)OH has appeared in studies examining how loss of C-terminal residues affects biological activity at the GHRH receptor. It is often used alongside other fragments to define structure-activity relationships within the GHRH family.
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