Ipamorelin is a pentapeptide. Five amino acids. That's it. But three of those five don't exist in nature. The sequence: Aib His D 2 Nal D Phe Lys, with a C terminal amide. Position 1 is aminoisobutyric acid the Sermorelin & Ipamorelin Blend: Research in GH Modulation 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 Beyond Hunger: Structure, Signaling and Systemic Roles of Ghrelin[v1] Preprints.org Direct Peptides Blog CJC 1295 Peptide: Structure, Benefits, and Research Use