Acetyl L Carnitine Vegetarian Capsules Natural Factors Canada 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 Ipamorelin 5 mg Peptide Gh Pathway & Endocrine Research PRG Sermorelin or Ipamorelin: Meaning, Differences, Benefits, Side Effects, and Which One May Be Better