LONG R IGF I IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society Compounds like Sermorelin, Tesamorelin, and IGF 1 LR3 help stimulate your bodys own production of growth hormone, which can be especially beneficial as we age. By boosting GH levels, they can help IGF 1 LR3 1 mg VPeptide IGF 1 LR3 Canada: Ultra Pure Peptide for Growth, Muscle, & Cellular Signaling Research