CJC 1295 + Ipamorelin in Knoxville GH Peptide Stack BFC The conceivable role of prolactin hormone in Parkinson disease: The same goal but with different ways ScienceDirect Prolactin a pleiotropic factor in health and disease Nature Reviews Endocrinology 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 Sermorelin vs. Other Peptides: What Is the Difference?