Most people train harder. Smarter people optimize recovery. IGF 1 LR3 is a long acting growth factor analog that supports muscle recovery, lean mass preservation, cellular repair, and metabolic signaling when used under medical 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: Benefits and Side Effects You Vita Bella Health