Difference Between GHRP 2 and GHRP 6 Peptides Comparison 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 CJC 1295 Ipamorelin Benefits, Side Effects, and Cost: The Complete Patient Guide Perfect B GHRH vs GHRP Growth Hormone Research Differences PRG PDF] Ipamorelin, the first selective growth hormone secretagogue. Semantic Scholar