LONG R IGF I A Medical Review of IGF 1 LR3 Dosage, Side Effects and Safety Aspects IGF 1 LR3 vs GH Peptides The Battle Between Performance & Risk IGF 1 LR3 Dosage Protocol: Safety Guide PeptidesExplorer 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