IGF 1 LR3 Injection Benefits And How It Works The HCG Institute What is IGF 1 LR3?, Insulin Like Growth Factor 1 Long R3 (IGF 1 LR3) is a modified version of IGF 1 with a longer half life, making it significantly more potent and effective for muscle growth, IGF 1 LR3 (Insulin like Growth Factor 1 Long R3) is often called the "Holy Grail" of muscle building peptides because of its potent anabolic effects. In a Med Spa context, it is typically sought out IGF 1 LR3 DOSES FOR MASSIVE GROWTH! #askDave IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease IGF LR3 1mg LIVV