IGF-1 LR3 | 99%+ High Purity Peptide Powder | 0.1 mg/vial & 1 mg/vial | CAS 946870-92-4 | Muscle Growth, Cell Regeneration, Recovery

For Individual Buyers

Looking to take your muscle growth and recovery to the next level? IGF-1 LR3 is a modified version of Insulin-like Growth Factor-1, engineered to have a longer active life in the body than standard IGF-1. It is one of the most powerful peptides for promoting lean muscle mass, enhancing protein synthesis, and accelerating recovery after training. The LR3 modification prevents the peptide from binding to binding proteins in the bloodstream, keeping it active for much longer and making it more effective at lower doses. Whether you are focused on muscle gain, injury recovery, or overall tissue repair, IGF-1 LR3 delivers results.

Key Benefits:

Promotes lean muscle growth without excess water retention

Speeds up post-workout recovery and reduces soreness

Supports cell regeneration and tissue repair

Longer active half-life for less frequent dosing

Note: This is a research/cosmetic raw material peptide powder. Safe and discreet packaging provided.

For Suppliers / Wholesalers

IGF-1 LR3 is a premium peptide in the muscle growth and recovery category, with strong demand from bodybuilders, athletes, and research institutions. Unlike standard IGF-1, the LR3 modification offers extended half-life and superior bioavailability, making it the preferred choice for serious users. Our product delivers 99%+ purity, CAS 946870-92-4, in two convenient vial sizes – 0.1 mg for trial or short-term use, and 1 mg for extended protocols. Pricing is $43 per vial for 0.1 mg and $187 per vial for 1 mg.

Why choose us?

Premium product with strong demand in fitness and research markets

Two options to serve different customer segments

LR3 modification offers superior value over standard IGF-1

Stable inventory, from small trials to bulk exports

Ideal for distributors, gym suppliers, and research institutions

We also offer multiple specifications and pricing tiers. Contact us to request a full price list based on your volume requirements.

What Is IGF-1 LR3?

IGF-1 LR3 stands for Insulin-like Growth Factor-1 Long Arginine 3. It is a synthetic, modified version of natural IGF-1, which is a hormone that plays a key role in muscle growth, cell division, and tissue repair. The LR3 modification involves changing the amino acid sequence at position 3, which significantly reduces the peptide's ability to bind to IGF-binding proteins in the bloodstream. This means the peptide remains active in the body for much longer than natural IGF-1 – up to several hours instead of minutes. The result is a more potent and longer-lasting effect on muscle protein synthesis, muscle cell proliferation, and recovery. 

Why Choose IGF-1 LR3?

Longer active life than standard IGF-1. Natural IGF-1 breaks down quickly in the body because it binds to proteins that neutralize it. IGF-1 LR3 is specifically engineered to avoid this binding, staying active for hours instead of minutes. This means you get more effect from every dose.

Powerful lean muscle growth. IGF-1 LR3 is one of the most effective peptides for promoting new muscle cell growth – a process called hyperplasia. Unlike steroids that mainly enlarge existing muscle cells, IGF-1 LR3 helps create new cells, leading to more complete and lasting muscle development.

Faster recovery and healing. Whether you are recovering from intense workouts or an actual injury, IGF-1 LR3 accelerates tissue repair. It promotes the regeneration of muscle, tendon, and even nerve tissue, helping you get back to full strength faster.

No excess water retention. Unlike many muscle-building compounds that cause bloating and water weight, IGF-1 LR3 promotes dry, lean muscle gains. The muscle you build is quality tissue, not temporary water weight.

Trusted by athletes and researchers. IGF-1 LR3 has been used for years in both research settings and by serious fitness enthusiasts. Its effects on muscle growth and recovery are well documented in scientific literature and user experience.