Follow for more info on how to optimize your body. IGF 1 LR3 is one of the most misunderstood compounds in the entire space. People either treat it like a magic shortcut or Injecting IGF1 LR3 directly into the muscle your training : r nattyorjuice Insulin like growth factor 1 promotes cell cycle progression via upregulation of cyclin D1 expression through the phosphatidylinositol 3 kinase nuclear factor B signaling pathway in FRTL thyroid cells Acta Pharmacologica Sinica Organ weights in response to Long R3 insulin like growth factor 1 (LR3 Download Scientific Diagram Gut derived IL 13 contributes to growth via promoting hepatic IGF 1 production Microbiome Springer Nature Link