IGF 1 LR3 and Penis Enlargement: What the Evidence Actually Shows IGF 1 LR3 and Penis Enlargement: What the Evidence Actually Shows Buy IGF 1 LR3 Best Peptides Made in Germany at Fatburners.at Insulin Like Growth Factor 1 (IGF 1) Physiopedia IGF 1 LR3 100mcg 1mg Peptide Bulk Supply 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