IGF 1 LR3 vs HGH: Which Growth Enhancer Is Better? Swolverine IGF1 LR3 Peptide Anderson Longevity Clinic Igf lr3 dosage frequency on training vs rest days Theres a lot of confusion around peptides and muscle., Heres how I actually think about it., Most peptides dont build muscle directly., They improve the systems that allow muscle to grow., First, IGF 1 DES: Dosage, Benefits, and Comparison with IGF 1 LR3 i313