Normal Physiology of ACTH and GH Release in the Hypothalamus and Anterior Pituitary in Man Endotext NCBI Bookshelf Peptide Therapy Ipamorelin Revolution Health & Wellness Hormones.gr 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 Mechanisms of Disease: the adrenocorticotropin receptor and disease Nature Reviews Endocrinology Effects of Excess Cortisol and Hypercortisolism