Difference Between GHRP 2 and GHRP 6 Peptides Comparison Ipamorelin is a potent growth hormone releasing peptide that has some potential advantages over some of the others. Although peptides seem to be doled out like aspirin, keep in mind that these are Ipamorelin & GHRP 2 and Muscle Cells Biotech Peptides GHRP 6 vs GHRP 2: Best Peptide for Muscle Growth & Recovery Growth Hormone Peptides: The difference between Sermorelin, Ipamorelin, and Tesamorelin Sermorelin & GHRP 6 & GHRP 2 Blend For Sale (9mg)