IGF 1 LR3 tells your muscle cells to grow, repair, and absorb nutrients better. It works directly at the muscle level to help you build lean muscle and recover faster.What it is IGF 1 Insulin Like Growth Factor 1 (IGF 1) and Its Monitoring in Medical Diagnostic and in Sports ORF Genetics ISOkine IGF 1 LR3 Growth Factor HGH vs IGF 1 LR3: Scientific Comparison & Research Guide human IGF 1 LR3 protein 1000 g Human E. coli ReliaTech GmbH A peptide cycle length is how long you use a peptide before pausing or reassessing. , Too short and you wont see full results. Too long and your body adapts, making it less effective. , Every