IGF 1 LR3 vs HGH: Which Growth Enhancer Is Better? Swolverine IGF 1 LR3 (1mg) True Lab Peptides IGF 1 LR3 (1 MG) Sigma Compounds IGF 1 LR3 1MG Research Peptide Laboratory Study 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 vs HGH: Which Growth Enhancer Is Better? Swolverine