What is Sermorelin?
An introduction to sermorelin, a GHRH analog that was once FDA-approved for pediatric growth hormone deficiency.
Last updated: January 28, 2026
What is Sermorelin?
Sermorelin is a synthetic version of growth hormone-releasing hormone (GHRH), containing the first 29 amino acids of the natural 44-amino-acid hormone. It was previously FDA-approved for diagnosing and treating pediatric growth hormone deficiency but was voluntarily withdrawn from the market in 2008.
Key Facts
| Fact | Detail |
|---|---|
| Previous FDA Approval | Yes (withdrawn 2008) |
| Type | GHRH analog (1-29) |
| Administration | Subcutaneous injection |
| Current Status | Available through compounding |
How Does It Work?
Sermorelin binds to GHRH receptors on the pituitary gland, stimulating the natural production and release of growth hormone. Unlike synthetic GH injections, sermorelin works through the body’s feedback systems, producing more physiological GH patterns.
The pituitary responds to sermorelin with pulsatile GH release, similar to natural secretion patterns seen in younger individuals.
Why Was It Withdrawn?
Sermorelin was voluntarily withdrawn from the U.S. market for business reasons (manufacturing issues), not safety concerns. It remains available through compounding pharmacies for off-label use.
Research Status
What Studies Show
- Well-established mechanism from decades of research
- Demonstrated ability to increase GH and IGF-1 levels
- Used historically for GH deficiency diagnosis
- Limited modern clinical trial data for adult applications
Evidence Quality
Sermorelin has a longer history than most research peptides. However, most data comes from pediatric populations or diagnostic use. Evidence for anti-aging claims in adults is limited.
Important Considerations
- Requires intact pituitary function to work
- Effects diminish with age as pituitary capacity decreases
- Must be injected (not orally active)
- Compounded versions vary in quality
This guide is for educational purposes only. Consult a healthcare provider for medical advice.
Related Content
CJC-1295
Hormonal · moderate evidence
Follistatin
Hormonal · moderate evidence
GHRP-2
Hormonal · moderate evidence
What is Sermorelin?
An introduction to sermorelin, a GHRH analog that was once F...
CJC-1295 vs Sermorelin
View side-by-side analysis
GHRP-6 vs Sermorelin
View side-by-side analysis
Get Research Alerts
New dossiers and major study summaries delivered to your inbox. No spam, just evidence.
No spam. Unsubscribe anytime.
Disclaimer: This educational guide does not constitute medical advice. The information presented is based on current research but should not be used for diagnosis, treatment, or prevention of any disease. Always consult a qualified healthcare provider before making health decisions.