IGF 1 LR3 Receptor Grade 1mg Enhance Muscle Growth & Recovery Buy Now A Medical Review of IGF 1 LR3 Dosage, Side Effects and Safety Aspects 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 IGF 1 LR3 EQUINE MEDCARE Buy IGF 1 LR3 Best Peptides Made in Germany at Fatburners.at