IGF-LR3 (Insulin-like Growth Factor Long R3) is a modified version of IGF-1, designed to enhance its effectiveness by increasing its half-life and potency. This peptide promotes muscle growth, repair, and regeneration by binding to IGF receptors, stimulating cellular growth and division. IGF-LR3 is particularly sought after in research for its potential to support muscle hypertrophy, improve recovery, and aid in fat loss without affecting insulin sensitivity. Due to its extended activity, it is often studied for its long-lasting benefits in enhancing physical performance.