Direct Peptides Blog PDF) Ipamorelin, the first selective growth hormone secretagogue Molecular recognition of two approved drugs Macimorelin and Anamorelin by the growth hormone secretagogue receptor Acta Pharmacologica Sinica What are the dosing guidelines for Ipamorelin (growth hormone secretagogue) for growth hormone stimulation? 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