igf-1 lr3 side effects reddit What is LR3? Insulin-Like Growth Factor 1 Long R3 (IGF-1 LR3) is a modified version of IGF-1 with a longer half-life, making it significantly more potent and effective for muscle growth Dr. Greg Jones, NMD, ABAAHP
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doi: 10.1074/jbc.M113.521062
TB-500, on the other hand, is a peptide that promotes cell migration and repair