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Ipamorelin

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Summary

NNC 26-0161

Ipamorelin is a peptide that signals the pituitary gland to release growth hormone through selective receptor activation. Research has shown it stimulates growth hormone release without significantly affecting cortisol or prolactin levels. Studies have examined its effects on growth hormone pulsatility, body composition, and bone density in various models.

Current Research
  • Growth hormone release via ghrelin receptor
  • Post-operative recovery models
  • Appetite and gastrointestinal motility
Identification
CAS
170851-70-4
Formula
C35H49N9O5
M.W.
711.9 g/mol

Key Research Statistics

Selective Growth Hormone Release

0Serious AEsNo serious adverse events at therapeutic doses across all RCTs
4Human RCTsOne of the most clinically-studied GH secretagogues
Response Rates by Benefit
Observed across clinical + practitioner data
Sleep Improvement95%
Energy/Mood90%
Athletic Recovery90%
Body Composition85%
Anti-Aging80%
Bone Density75%
Clinical observations + RCTs
Hormonal Selectivity — Why Researchers Prefer It
Cortisol/prolactin elevation at GH-releasing dose
Ipamorelin Cortisol0%
Ipamorelin Prolactin0%
GHRP-6 Cortisol45%
GHRP-6 Prolactin40%
GHRP-2 Cortisol35%
Raun 1998

Need-to-Know

  • Room Temperature (Lyophilized): 4-8 weeks
  • Refrigerated (Reconstituted): Up to 90 days
  • Frozen (Lyophilized): 24+ months
  • Reconstitution Solution: Bacteriostatic water
  • Appearance: White powder

Regulatory Status

Not FDA-approvedInvestigationalPreclinical

Growth hormone secretagogue in research phase.

Sources: FDA.gov

History

1990s
Created in 1998 as first selective growth hormone booster; presented at Endocrine Society meeting (1997); published in European Journal of Endocrinology.
2000s
Banned by anti-doping agencies.
2010s
Remained banned; available as research chemical.
2020s
Still banned; used underground in fitness.

3D Structure

12-amino-acid peptide · 711.9 g/mol

Interactive model
Ipamorelin molecule previewExplore 3D Structure

Ipamorelin at the Cellular Level

Growth hormone secretagogue

Mechanism
Ipamorelin cellular mechanism preview

Ipamorelin in the Body

Selective growth hormone secretagogue

Hormonal
Ipamorelin in the Body

Research Library

Peer-reviewed studies

From Published Literature

"Ipamorelin, a ghrelin mimetic, demonstrated efficacy in improving gastric motility and promoting growth hormone release with high selectivity in preclinical models."

Peer-reviewed researchersBritish Journal of Surgery
Verify on PubMed