IGF 1, the Cross Road of the Nutritional, Inflammatory and Hormonal Pathways to Frailty Increased testicular insulin like growth factor 1 is associated with gonadal activation by recombinant growth hormone in immature rats Reproductive Biology and Endocrinology Springer Nature Link LR3 IGF 1 (Human), Recombinant Protein, CHO, Tag Free 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 IGF 1 LR3 1mg Insulin Like Growth Factor