What is Ipamorelin?
Ipamorelin is a synthetic five-amino-acid peptide from the “growth-hormone secretagogue” family.
How does Ipamorelin work?
It mimics ghrelin at the GHS-R1a receptor to trigger growth-hormone release, and is notable for affecting cortisol and prolactin less than older compounds.
What are researchers studying?
- ●Selective growth-hormone release
- ●Post-surgical bowel recovery (clinical trials)
- ●Bone and muscle in animal models
Where does the evidence stand?
Reached human trials but was not approved. Not approved by the FDA. Prohibited in sport by WADA.
Quick facts
- Research area
- GH Secretagogues
- Sequence
Aib-His-D-2Nal-D-Phe-Lys-NH2- Also known as
- Ipa
- Third-party lab results
- 3 published COAs →
- Tested vendors tracking it
- 2 vendors →
Recent peer-reviewed research
The most relevant Ipamorelin studies from the last three years, via PubMed (U.S. National Library of Medicine).
- Injectable Peptide Therapy: A Primer for Orthopaedic and Sports Medicine PhysiciansThe American journal of sports medicine · 2026 Jan · PubMed ↗
- Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future PerspectivesInternational journal of molecular sciences · 2026 Apr 27 · PubMed ↗
- A new era of doping? Use of peptide and peptide-analog drugs in recreational and professional sport and bodybuilding: a critical reviewThe Journal of sports medicine and physical fitness · 2026 Jul · PubMed ↗
- The emerging landscape of performance-enhancing peptides modulating GH-IGF1 axis: bridging the gap between clinical evidence and patient self-administrationFrontiers in endocrinology · 2026 · PubMed ↗
- Peptide Supplements and Their Therapeutic Applications in Sports MedicineThe American journal of sports medicine · 2026 Aug 11 · PubMed ↗
Compare Ipamorelin
Related research guides
Every Monday: the week's price drops and restocks, new third-party lab results, and a plain-English research guide with the latest studies. No spam — unsubscribe anytime.
This guide summarizes published research for educational purposes only. It is not medical advice and does not describe how to use Ipamorelin. Citations link to PubMed and are listed for reference — we haven't reviewed or endorsed their findings. Products referenced on The Peptide Audit are sold by third parties for laboratory research use only and are not for human consumption.