IGF 1LR3 Most people think all peptides = fat loss. That's not even close. IGF 1 LR3 isn't about burning tissue it's about building it. This is the signal that tells muscle fibers to: ORF Genetics ISOkine IGF 1 LR3 Growth Factor IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society 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 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society