Explanation, Benefits, and Dosing for IGF LR3 Wittmer Rejuvenation Clinic IGF 1 LR3 Receptor Grade 1mg Enhance Muscle Growth & Recovery Buy Now Official Nordic Labs IGF 1LR3 UK Stockist Just SARMS Personal experience with igf1 lr3 peptide? IGF 1 LR3 (Insulin like Growth Factor 1 Long R3) is often called the "Holy Grail" of muscle building peptides because of its potent anabolic effects. In a Med Spa context, it is typically sought out