IGF 1 regulates cancer cell immune evasion in prostate cancer Scientific Reports IGF 1 LR3 The Muscle Building Peptide Everyones Talking About , IGF 1 LR3 is one of the most powerful performance peptides used for muscle growth, recovery, and fat loss. Its a modified version Recombinant Human LR3 IGF I IGF 1 Protein, CF (8335 G1): Novus Biologicals Modified GRF (1 29) Growth Hormone Research Peptide Pure Peptides UK CJC 1295 (mod GRF 1 29) (3mg) + Ipamorelin (4.5mg) Blend Canlab International Some peptides can be risky if someone has active or recent cancer. Peptides that raise growth hormone or IGF 1, like IGF 1 LR3, IGF 1 DES, Tesamorelin, Sermorelin, CJC 1295, and Ipamorelin, increase