Cortisol Disorders The role of cortisol and prolactin in the pathogenesis and clinical expression of psychotic disorders ScienceDirect Changes in pituitary function with ageing and implications for patient care Nature Reviews Endocrinology Corticotropin Like Intermediate Peptide an overview ScienceDirect Topics 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