IGF 1 LR3 tells your muscle cells to grow, repair, and absorb nutrients better. It works directly at the muscle level to help you build lean muscle and recover faster.What it is IGF 1 ORF Genetics MESOkine Bovine IGF 1 LR3 Growth Factor Insulin like growth factor 1 deficiency and metabolic syndrome Journal of Translational Medicine Springer Nature Link Attenuated glucose stimulated insulin secretion during an acute IGF 1 LR3 infusion into fetal sheep does not persist in isolated islets Journal of Developmental Origins of Health and Disease Cambridge Core Localized Igf 1 transgene expression sustains hypertrophy and regeneration in senescent skeletal muscle Nature Genetics Human Insulin like Growth Factors 1 Long R3 (IGF 1 LR3) ELISA Kit MBS733937 from MyBioSource.com Biocompare.com