IGF-1 LR3
researchExtended-acting insulin-like growth factor for muscle growth and recovery
Availability in Thailand
IGF-1 LR3 is available from select peptide vendors in Thailand. It is a more specialised compound primarily used by experienced bodybuilders and is not typically offered at clinics.
Prescription: Not required from vendors.
Legal status: Not a controlled substance in Thailand. Available as a research peptide. Not approved for therapeutic use in any country.
⚠️ ⚠️ IGF-1 LR3 is a potent compound that requires careful dosing and blood glucose monitoring. Not recommended for beginners. Use under medical supervision if possible.
Where to Buy in Thailand
IGF-1 LR3 is one of the more expensive research peptides. Check vendor websites for current availability and rates.
Vendors
Overview
IGF-1 LR3 (Long R3 Insulin-like Growth Factor-1) is a modified version of human IGF-1 with an extended half-life. The modifications — an arginine replacing glutamic acid at position 3 and a 13-amino acid extension at the N-terminus — reduce binding to IGF binding proteins, resulting in significantly greater bioavailability and a longer active life than native IGF-1. This makes it one of the most potent anabolic peptides available.
In Thailand, IGF-1 LR3 is available through select peptide vendors but is considered an advanced compound. It is primarily used by experienced bodybuilders seeking muscle hyperplasia (new muscle cell creation) rather than just hypertrophy (enlarging existing cells). Its potent effects on blood glucose require careful monitoring.
How It Works
Direct anabolic signalling
IGF-1 LR3 binds to IGF-1 receptors on muscle cells, directly activating the PI3K/Akt/mTOR pathway — the primary intracellular signalling cascade for muscle protein synthesis. Unlike GH secretagogues that work indirectly through the pituitary, IGF-1 LR3 acts directly on target tissues.
Muscle hyperplasia potential
IGF-1 promotes the proliferation and differentiation of satellite cells — the muscle stem cells. This theoretically supports muscle hyperplasia (creation of new muscle fibres), not just hypertrophy (growth of existing fibres). This is what makes it uniquely appealing to advanced bodybuilders who have maximised hypertrophy.
Extended half-life
The LR3 modifications reduce binding to IGF binding proteins by over 95%, dramatically increasing the amount of free, active IGF-1 in circulation. The functional half-life extends to approximately 20-30 hours compared to minutes for native IGF-1.
Protocol Quick Reference
Benefits & Uses
- Potent anabolic effects: Directly activates muscle protein synthesis pathways — one of the most powerful anabolic signalling molecules available
- Muscle hyperplasia potential: May promote new muscle fibre creation through satellite cell activation — beyond what GH secretagogues achieve
- Enhanced recovery: Accelerates muscle repair and recovery between training sessions through direct growth factor signalling
- Extended activity: Single daily injection provides sustained anabolic signalling for 20-30 hours
- Nutrient partitioning: Enhances the body's use of nutrients for muscle growth rather than fat storage
Side Effects
Common
- Hypoglycemia (low blood sugar) — the most important concern. Symptoms include dizziness, shakiness, sweating, and confusion. Always eat carbohydrates around injection time
- Mild joint and muscle pain
- Water retention
- Increased hunger
Less Common
- Headache
- Jaw and hand growth with prolonged high-dose use (acromegaly signs)
- Mild nausea
Serious
- Hypoglycemia can be dangerous — always have carbohydrates available. Do not inject on an empty stomach
- Cancer risk — IGF-1 is a potent growth factor that can promote tumour growth. Strictly avoid with any cancer history or elevated cancer markers
- Organ growth with chronic high-dose use — IGF-1 promotes growth of all tissues, not just muscle
- Not recommended for diabetics without medical supervision
- Not for beginners — requires understanding of blood glucose management
- Banned by WADA
Related Peptides
FAQ
Is IGF-1 LR3 suitable for beginners?▼
No. IGF-1 LR3 is an advanced compound that requires blood glucose monitoring and careful dosing. Beginners should start with CJC-1295/Ipamorelin or MK-677 — these stimulate the body's own GH and IGF-1 production more safely. IGF-1 LR3 is for experienced users who understand hypoglycemia management.
Will IGF-1 LR3 cause hypoglycemia?▼
It can. IGF-1 LR3 lowers blood glucose through insulin-like effects. Always eat a carbohydrate-containing meal within 30 minutes of injection, and keep fast-acting carbohydrates available. Monitor blood glucose if you have access to a glucometer.
How does IGF-1 LR3 differ from HGH?▼
HGH (human growth hormone) works upstream — it stimulates the liver to produce IGF-1, among many other effects. IGF-1 LR3 is the downstream growth factor itself, delivered directly. It is more targeted for muscle growth but lacks the broad metabolic benefits of HGH (fat loss, sleep improvement, etc.).
Is IGF-1 LR3 available in Thailand?▼
Yes, from select peptide vendors. It is a more specialised compound and not as widely stocked as common peptides like BPC-157 or CJC-1295. Check our vendor directory for current availability.
Disclaimer
This information is for educational purposes only and does not constitute medical advice. Peptides should be used under the guidance of a qualified healthcare professional. Individual results vary. Always consult your doctor before starting any peptide therapy.