What are the dosing guidelines for Ipamorelin (growth hormone secretagogue) for growth hormone stimulation? 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 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 From Belly to Brain: Targeting the Ghrelin Receptor in Appetite and Food Intake Regulation