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 GHRP Peptides Group: From Strongest to Weakest Particle Peptides PARTICLE, s. r. o. Comparing Ipamorelin and GHRP 6 Biotech Peptides Effects of GHRP 2 and Hexarelin, Two Synthetic GH Releasing Peptides, on GH, Prolactin, ACTH and Cortisol Levels in Man. Comparison with the Effects of GHRH, TRH and hCRH ScienceDirect Enhance Muscle Recovery with Ipamorelin and GHRP 6 Figure 3 from Ipamorelin, the first selective growth hormone secretagogue. Semantic Scholar