Educational Wellness Information Only
This platform provides peer-reviewed research summaries and educational content about peptides for wellness and optimization purposes. Nothing on this site is intended as medical advice, diagnosis, or treatment. We do not claim any peptide can diagnose, treat, cure, or prevent any disease. Always consult a licensed healthcare provider before beginning any wellness protocol.
Statements on this site have not been evaluated by the FDA. Compounded preparations are subject to applicable state and federal regulations. Availability and eligibility vary.
What is IGF-1 LR3?
IGF-1 LR3 is a growth factor peptide studied for muscle protein synthesis (preclinical) and tissue repair signaling. A modified form of insulin-like growth factor-1 with an Arg3 substitution and N-terminal extension that reduces binding to IGFBPs, dramatically extending its half-life and free fraction in circulation.