IGF 1 LR3 1mg Peptide: Growth Factor Research 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 Igf 1 Lr3 ( Insulin like Growth Factor 1 Long R3 ) Dosage Form: Liquid at Best Price in Shenzhen Sino Kingtop Pharm Co.,ltd. 40 YEARS OF IGF1: Insulin like growth factors: actions on the skeleton in: Journal of Molecular Endocrinology Volume 61 Issue 1 (2018) Muscle Growth Truro Peptides (PC)