IGF-1 DES vs IGF-1 LR3: which is better?

They serve different purposes. IGF-1 LR3 has a long half-life (20-30 hours) and works systemically. IGF-1 DES has a short half-life (20-30 minutes) and is used for localised, site-specific effects. For targeted muscle growth, DES is preferred. For overall systemic IGF-1 elevation, LR3 is more practical.

Growth Hormone

IGF-1 DES

Des(1-3) IGF-1 (Truncated Insulin-like Growth Factor 1)

10x more potent than IGF-1 with no binding protein interference

IGF-1 DES is a truncated version of IGF-1 missing the first three amino acids. This modification makes it approximately 10 times more potent because it cannot be sequestered by IGF binding proteins.

IGF

Admin routes

Subcutaneous, Intramuscular

Popularity

Niche

Side effects

Monitor closely

Vendors

1 rated

Key benefits

1Approximately 10x more potent than standard IGF-1

2Not sequestered by IGF binding proteins

3Short half-life allows targeted, localised application

4Promotes muscle cell hyperplasia (new cell creation) in vitro

What to expect

Immediate

Blood sugar drop possible within 30 minutes, have carbs available

Week 2-4

Localised muscle fullness and pump in injected areas

Week 4-6

Measurable size increases in targeted muscles reported by users

Based on community reports and published research. Individual results vary significantly.

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Dosing protocols

Localised muscle growth (community protocol)

Dose

20-50 mcg

Frequency

Injected bilaterally into target muscle, pre or post workout

Duration

4-6 week cycles

Dosing information is sourced from published research and community protocols. This is not a recommendation. Consult a healthcare professional.

Research status|Research compound - used in in vitro and animal studies

Overview

IGF-1 DES (des(1-3) IGF-1) is a naturally occurring variant of IGF-1 found in the human brain during fetal development. The removal of the N-terminal tripeptide (Gly-Pro-Glu) eliminates its ability to bind to IGF binding proteins (IGFBPs), which normally sequester and inactivate circulating IGF-1. Because IGFBPs cannot neutralise it, IGF-1 DES has roughly 10-fold greater biological potency than full-length IGF-1 LR3. It has a very short half-life (20-30 minutes) compared to IGF-1 LR3 (20-30 hours), making it suitable for localised, site-specific use.

How it works

IGF-1 DES binds to and activates the IGF-1 receptor (IGF-1R) with similar affinity to full-length IGF-1. Once IGF-1R is activated, it triggers the PI3K/AKT pathway (promoting cell survival and protein synthesis) and the RAS/MAPK pathway (promoting cell proliferation and differentiation). Because it is not bound by IGFBPs, all administered IGF-1 DES is bioavailable and active, resulting in much higher effective potency per microgram.

Side effects

Hypoglycaemia (potent insulin-like activity)

seriousCommon

Localised pain and swelling at injection site

mildCommon

Potential for accelerated growth of existing tumours (IGF pathway)

seriousRare

Research history

1988

Francis et al. characterise des(1-3) IGF-1 from bovine colostrum

Recommended products

Hand-picked for this compound. Ships via Amazon 🇺🇸

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Core Supplies

Bacteriostatic Water 30mL

Sterile bacteriostatic water for peptide reconstitution. Contains 0.9% benzyl alcohol to inhibit bacterial growth.

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Storage & Transport

Portable Insulin Cooler Fridge

Portable peptide fridge with precise 2-8C cooling. Battery powered, travel-ready. Designed for insulin/peptide storage.

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References

[1]Francis GL, et al. 'Insulin-like growth factors 1 and 2 in bovine colostrum. Sequences and biological activities compared with those of a potent truncated form.' Biochemical Journal, 1988.

Frequently asked questions

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Community experiences

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Use our free reconstitution calculator to work out syringe units for IGF-1 DES.

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Syringes, bac water, storage

Guides

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Disclaimer: This guide is for educational and informational purposes only. It is not medical advice. The dosing protocols listed are sourced from published research and community reports and do not constitute a recommendation. Always consult a qualified healthcare professional before using any peptide. Check your local regulations regarding peptide purchase and use.