Sermorelin or Ipamorelin: Meaning, Differences, Benefits, Side Effects, and Which One May Be Better If you're considering peptide therapy, this is worth reading before you start. Peptides like sermorelin and ipamorelin work through pathways shaped by your existing hormone environment. Testosterone, thyroid function, and cortisol patterns Ipamorelin vs Sermorelin: Which Peptide Therapy is Right? Growth Hormone Peptides: The difference between Sermorelin, Ipamorelin, and Tesamorelin