IGF 1 LR3 Peptide (0.1mg, 1mg) Research Use Only Priority Aminos RUO Recombinant Human IGF 1 LR3 Protein IGF 1 & LR3 (Build Blend) Peptide Therapies Elite Health HRT IGF LR3 is a peptide that play a role in muscle growth, tissue repair and recovery. But like all peptide therapies, it's not one size fits all. We focus on using peptides thoughtfully and in the Maximize Muscle Growth with IGF LR3 Peptide FIT9