CJC 1295, Ipamorelin, Tesamorelin & Sermorelin: Deep Dive on the Best GH Peptides Comparison of various in vitro model systems of the metabolism of synthetic doping peptides: Proteolytic enzymes, human blood serum, liver and kidney microsomes and liver S9 fraction ScienceDirect What Is Ipamorelin and How Does It Compare vs HGH and Peptides Ipamorelin is a potent growth hormone releasing peptide that has some potential advantages over some of the others. Although peptides seem to be doled out like aspirin, keep in mind that these are