Recombinant Human LR3 IGF 1(E51R) Protein ORF Genetics ISOkine IGF 1 LR3 Growth Factor IGF 1, the Cross Road of the Nutritional, Inflammatory and Hormonal Pathways to Frailty IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society Most people train harder. Smarter people optimize recovery. IGF 1 LR3 is a long acting growth factor analog that supports muscle recovery, lean mass preservation, cellular repair, and metabolic signaling when used under medical 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