IGF 1 LR3 vs HGH: Which Growth Enhancer Is Better? Swolverine IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society Effect of 6 weeks of treatment on serum IGF 1. Red bars represent Download Scientific Diagram CJC 1295 + Ipamorelin vs IGF 1 LR3 for Muscle Growth IGF 1 LR3 forces receptor desensitization in 4 6 weeks, requiring months off before you can use it again. CJC 1295 and Ipamorelin amplify your natural