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 Insulin Like Growth Factor 1 (IGF 1) and Its Monitoring in Medical Diagnostic and in Sports IGF 1 LR3 (1mg) Alpha BioMed Implications of Insulin Like Growth Factor 1 in Skeletal Muscle and Various Diseases Organ weights in response to Long R3 insulin like growth factor 1 (LR3 Download Scientific Diagram IGF 1LR3