Superior Peptide IGF 1 LR3 Muscle Growth & Recovery IGF 1 LR3 The Muscle Building Peptide Everyone's Talking About IGF 1 LR3 is one of the most powerful performance peptides used for muscle growth, recovery, and fat loss. It's a modified version Muscles are most sensitive to growth signals after training. IGF 1 LR3 drives nutrients into muscle cells, boosts protein synthesis and recovery. Triggers muscle growth pathways, and helps nutrients Igf 1 LR 3 Enhanced Pharmaceuticals