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 Tesamorelin vs Ipamorelin: Which Peptide Is Best for Fat Loss and Body Recomposition? Peptides Unleashed The most common GH releasing peptides: Ipamorelin A ghrelin receptor agonist that triggers short pulses of growth hormone release from the pituitary with minimal effects on cortisol, prolactin, or appetite. Tesamorelin Difference Between Sermorelin and Ipamorelin