IGF 1 LR3 The Muscle Building Peptide Everyone's Talking About IGF 1 LR3 is one of the most powerful performance peptides used for muscle growth, recovery, and fat loss. It's a modified version 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 IGF 1 LR3 Peptide (0.1mg, 1mg) Research Use Only Priority Aminos Recombinant human IGF 1 LR3 protein (Qk041) Qkine IGF 1 LR3 active protein P05019.1 MyBioSource