What is IGF-1 DES?
IGF-1 DES (des(1-3)IGF-1) is a truncated 67-amino-acid analog of insulin-like growth factor-1 missing the N-terminal Gly-Pro-Glu tripeptide. Reduced IGF-binding protein affinity leaves more free peptide for IGF-1 receptor activation, yielding roughly 2–10× potency vs native IGF-1 in preclinical assays — but a very short ~20–30 minute half-life. Evidence is almost entirely animal/cell literature; not FDA-approved.
Mechanism of Action
IGF-1 receptor (IGF1R) agonism with markedly reduced IGFBP sequestration; activates PI3K/Akt/mTOR and MAPK pathways for protein synthesis and cell proliferation; short free-peptide half-life favors brief, localized signaling rather than sustained systemic exposure
Target: IGF-1 receptor (IGF1R); reduced IGFBP-1/IGFBP-3 binding
Research Indications
Stimulates natural GH release through pituitary signaling pathways
Associated with increased lean mass and reduced body fat
Supports tissue repair and recovery from exercise or injury
Some protocols show improvements in slow-wave and restorative sleep
Research Protocols
These are commonly discussed research protocols — not medical advice. Consult a healthcare provider before use.
| Goal | Dose | Frequency | Route |
|---|---|---|---|
| Conservative Research Start | 50 mcg | Once daily (peri-workout) | SubQ or IM |
| Common Research Range | 50–100 mcg | Once daily | SubQ or IM |
| Upper Community Discussion | 100–150 mcg | Once daily, short cycles | SubQ or IM |
Peptide & Drug Interactions
Always consult your healthcare provider before combining with other compounds. Use our Interaction Checker for reference.
How to Reconstitute & Inject
Use bacteriostatic (BAC) water only. Avoid saline — may cause precipitation. Refrigerate and use within 28 days.
- 1
Remove IGF-1 DES vial from refrigeration and allow to reach room temperature (15–20 minutes)
- 2
Clean vial top with alcohol swab and allow to air dry completely
- 3
Using a sterile syringe, draw the calculated volume of bacteriostatic water (BAC water)
- 4
Inject BAC water slowly down the side of the vial — do not aim directly at the powder
- 5
Gently swirl in circular motions — DO NOT shake vigorously as this degrades the peptide
- 6
Allow 2–3 minutes for full dissolution — solution should be clear and colorless
- 7
Draw calculated dose into an insulin syringe for subcutaneous injection
- 8
Inject into abdomen, thigh, or upper arm. Rotate injection sites to prevent lipodystrophy
- 9
Store reconstituted solution refrigerated (2–8°C) and use within 28 days
What to Expect
Week 1–2
Improved sleep quality may begin. Mild water retention possible initially.
Week 2–4
Deeper sleep, improved recovery. Appetite may increase slightly.
Week 4–8
Noticeable improvements in body composition, energy, and recovery speed.
Week 8–12
Skin quality improvements, reduced body fat, increased lean mass becoming visible.
Week 12+
Sustained improvements in body composition, strength, and overall vitality.
Side Effects & Safety
- Hypoglycemia — the primary preclinical safety signal for IGFBP-poor IGF variants; monitor blood glucose closely
- Symptoms of low blood sugar (shakiness, sweating, confusion) especially peri-workout or when fasted
- Injection site reactions (redness, bruising, discomfort)
- Theoretical growth-pathway concerns from strong IGF-1 receptor activation
- Risk of additive hypoglycemia when combined with insulin or other IGF-axis compounds — avoid casual stacking
- Human safety is not established — research-only and not FDA-approved
FDA Status & Regulatory Info
IGF-1 DES (des(1-3)IGF-1) is a truncated 67-amino-acid analog of insulin-like growth factor-1 missing the N-terminal Gly-Pro-Glu tripeptide. Reduced IGF-binding protein affinity leaves more free peptide for IGF-1 receptor activation, yielding roughly 2–10× potency vs native IGF-1 in preclinical assays — but a very short ~20–30 minute half-life. Evidence is almost entirely animal/cell literature; not FDA-approved.
Frequently Asked Questions
Research References
External links for education only. We do not control third-party content.
Research purposes only
This page is for educational reference. It is not medical or legal advice. Consult the FDA and a licensed healthcare professional for current regulations and individualized guidance.