Educational Content Only: Not medical advice. Always consult a qualified healthcare provider before using any compounds. Many peptides are research chemicals not approved by the FDA.
Quick Summary
Extended-action growth factor analog — muscle growth and recovery amplifier
Also called: Long R3 IGF-1, Insulin-like Growth Factor 1 LR3
What is IGF-1 LR3?
IGF-1 LR3 is a modified version of Insulin-like Growth Factor 1 with a 13-amino acid extension at the N-terminus and an arginine substitution at position 3. These modifications give it a significantly longer half-life (20-30 hours vs 12-15 minutes for native IGF-1) and reduced binding to IGF binding proteins, resulting in much greater bioactivity. It is one of the most potent growth factors available for muscle hypertrophy and recovery.
How It's Made
Produced via recombinant DNA technology in E. coli expression systems. The LR3 modification involves adding a 13-amino acid extension peptide and substituting glutamic acid with arginine at position 3 of the mature IGF-1 sequence.
Potential Benefits
Who Uses This?
Common goals and use cases for IGF-1 LR3:
Where to Buy IGF-1 LR3
Affiliate links — use code for discount. Always consult a healthcare provider before use.