Cortisol: Function, Linked Diseases, and Role in Metabolism 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 Ipamorelin and CJC 1295 are almost always discussed together in research circles, and the reason comes down to receptor pharmacology. The two peptides work through entirely different but complementary mechanisms that produce a Frontiers Corticosterone effects induced by stress and immunity and inflammation: mechanisms of communication Discover the Revolutionary Ipamorelin Peptide for Peak Bodybuilding Performance Effects of Excess Cortisol and Hypercortisolism