Ipamorelin: Raun, Gobburu, Beck, and the rest
The patient trial is the centre of this list. The hormone experiments explain why there was a trial to run.
Beck beside Raun and Gobburu
The Beck bowel-resection trial is the published patient-benefit test. It asked about the first tolerated meal and missed the primary endpoint. Beside it, the Gobburu healthy-volunteer study describes drug kinetics and a hormone pulse in healthy men.
The Raun founding characterization explains the selective growth-hormone response in cells, rats and pigs. I would put these papers next to one another on the desk: the reason for optimism, the human blood result and the patient result are easier to distinguish when they remain together.
Context, chemical identity and the newer reviews
The Camilleri gastrointestinal review and Zatorski ghrelin-agonist review provide class context, rather than new ipamorelin patient results. The Krug product analysis and Gajda seized-material analysis concern chemical identity and modified analogues. The Coutinho sports review addresses use and anti-doping concerns.
The remaining reviews cover aging, musculoskeletal injuries and performance, metabolic, endocrine and aesthetic conditions and injectable peptides in sports medicine. Their assessments of gaps are useful; their publication dates do not fill those gaps with new patients.
The complete bibliographic entries follow.
- Raun K, Hansen BS, Johansen NL, Thogersen H, Madsen K, Ankersen M, Andersen PH. Ipamorelin, the first selective growth hormone secretagogue. Eur J Endocrinol. 1998;139(5):552-561. ↗
- Gobburu JV, Agerso H, Jusko WJ, Ynddal L. Pharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers. Pharm Res. 1999;16(9):1412-1416. ↗
- Beck DE, Sweeney WB, McCarter MD; Ipamorelin 201 Study Group. Prospective, randomized, controlled, proof-of-concept study of the ghrelin mimetic ipamorelin for the management of postoperative ileus in bowel resection patients. Int J Colorectal Dis. 2014;29(12):1527-1534. ↗
- Johansen PB, Nowak J, Skjaerbaek C, Flyvbjerg A, Andreassen TT, Wilken M, Orskov H. Ipamorelin, a new growth-hormone-releasing peptide, induces longitudinal bone growth in rats. Growth Horm IGF Res. 1999;9(2):106-113. ↗
- Lu Z, Ngan MP, Liu JYH, Yang L, Tu L, Chan SW, Giuliano C, Lovati E, Pietra C, Rudd JA. The growth hormone secretagogue receptor 1a agonists, anamorelin and ipamorelin, inhibit cisplatin-induced weight loss in ferrets: Anamorelin also exhibits anti-emetic effects via a central mechanism. Physiol Behav. 2024;284:114644. ↗
- Stokes AH, Falls JG, Yoon L, Cariello N, Faiola B, Colton HM, Jordan HL, Berridge BR. Integrated approach to early detection of cardiovascular toxicity induced by a ghrelin receptor agonist. Int J Toxicol. 2015;34(2):151-161. ↗
- Camilleri M, et al. Actions and therapeutic pathways of ghrelin for gastrointestinal disorders. Nat Rev Gastroenterol Hepatol. 2009;6:343-352. ↗
- Zatorski H, et al. Relamorelin and other ghrelin receptor agonists - future options for gastroparesis, functional dyspepsia and proton pump inhibitors-resistant non-erosive reflux disease. J Physiol Pharmacol. 2017;68:797-805. ↗
- Krug O, et al. Analysis of new growth promoting black market products. Growth Horm IGF Res. 2018;41:1-6. ↗
- Gajda PM, et al. Glycine-modified growth hormone secretagogues identified in seized doping material. Drug Test Anal. 2019;11:350-354. ↗
- Coutinho LFD, et al. A new era of doping? Use of peptide and peptide-analog drugs in recreational and professional sport and bodybuilding: a critical review. J Sports Med Phys Fitness. 2026. ↗
- Mavrych V, et al. Therapeutic peptides in gerontology: mechanisms and applications for healthy aging. Front Aging. 2026. ↗
- Mendias CL, et al. Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance. Sports Med. 2026. ↗
- Renke G, et al. Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future Perspectives. Int J Mol Sci. 2026. ↗
- Villegas Meza AD, et al. Injectable Peptides in Sports Medicine: A Structured Narrative Review of Evidence, Safety, and Antidoping Implications. JBJS Rev. 2026. ↗