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 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 Sermorelin or Ipamorelin: Meaning, Differences, Benefits, Side Effects, and Which One May Be Better Managing Hyperprolactinemia and Sexual Side Effects from Antipsychotic Use Psychopharmacology Institute