Gonadorelin
Synthetic GnRH — HPG Axis Stimulation
Molecular Data
- Formula
- C55H75N17O13
- Molecular Weight
- 1182.31 g/mol
- Sequence
- pGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH2
01
Overview
Gonadorelin is a synthetic decapeptide identical to endogenous gonadotropin-releasing hormone (GnRH). It is used clinically to diagnose and treat hypothalamic hypogonadism and is researched for its role in maintaining testicular function during testosterone replacement therapy and in fertility protocols.
02
Mechanism of Action
Gonadorelin binds to GnRH receptors on pituitary gonadotrophs, stimulating the synthesis and release of LH and FSH. Pulsatile administration (mimicking endogenous GnRH) maintains receptor sensitivity, while continuous exposure causes receptor downregulation and gonadotropin suppression.
03
Research Highlights
Clinical use in hypogonadotropic hypogonadism shows restoration of fertility in both sexes
TRT adjunct studies show maintained intratesticular testosterone and sperm production
Comparative research between gonadorelin and HCG shows distinct but complementary HPG axis effects
04
Dosage
Administration & Timing
Subcutaneous (SC) injection into abdominal or gluteal subcutaneous tissue or IV pulsatile infusion. Research protocols mimic endogenous GnRH pulsatility (~90 min pulses).
Dosage Guidelines
Cycle Length
Variable; pulsatile infusion over weeks in reproductive research.
05
Reconstitution
Solvent
Bacteriostatic Water (0.9% benzyl alcohol)
Volume
2 mL added to a 5 mg vial
Concentration
2.5 mg/mL
Storage
Lyophilized powder: store at -20 °C long-term. Reconstituted: refrigerate 2–8 °C, use within 30 days.
Notes
Gonadorelin is native GnRH (decapeptide). Continuous infusion suppresses LH/FSH — pulsatile delivery is essential for stimulation.
Research Reference Only
Dosage and reconstitution values reflect commonly cited ranges from published research literature and are presented for educational and research reference only. This is not medical advice or a dosing recommendation. HEXAGEN does not endorse human use of any compound. Always consult a qualified healthcare professional.
Research Disclaimer
Gonadorelin is for educational and research purposes only. Not intended as medical advice. Consult a qualified healthcare professional before making any health-related decisions.
Related Compounds
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Gonadorelin — Common Research Questions
What is Gonadorelin?
Gonadorelin is a synthetic decapeptide identical to endogenous gonadotropin-releasing hormone (GnRH). It is used clinically to diagnose and treat hypothalamic hypogonadism and is researched for its ro... Gonadorelin belongs to the Other research category and is studied for its synthetic gnrh — hpg axis stimulation.
How does Gonadorelin work?
Gonadorelin binds to GnRH receptors on pituitary gonadotrophs, stimulating the synthesis and release of LH and FSH. Pulsatile administration (mimicking endogenous GnRH) maintains receptor sensitivity, while continuous exposure causes receptor downregulation and gonadotropin suppression.
What are the key research benefits of Gonadorelin?
LH and FSH stimulation for natural testosterone production. Testicular atrophy prevention during TRT. Hypothalamic hypogonadism treatment. Fertility preservation and spermatogenesis maintenance. HPG axis re-sensitization post-cycle. Diagnostic tool for GnRH reserve testing.
What is the molecular structure of Gonadorelin?
Gonadorelin has the molecular formula C55H75N17O13 and a molecular weight of 1182.31 g/mol. Its amino acid sequence is pGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH2. This structural information is important for researchers studying receptor binding and pharmacokinetics.
What does the research say about Gonadorelin?
Clinical use in hypogonadotropic hypogonadism shows restoration of fertility in both sexes TRT adjunct studies show maintained intratesticular testosterone and sperm production Comparative research between gonadorelin and HCG shows distinct but complementary HPG axis effects These findings are based on preclinical and clinical research. Gonadorelin is a research compound and these studies do not constitute medical advice.
Is Gonadorelin FDA approved?
No. Gonadorelin is not FDA-approved for any indication. It is a research chemical studied in preclinical and early clinical research. These compounds are not approved for human therapeutic use and should only be studied in appropriate research settings.
What category does Gonadorelin belong to?
Gonadorelin belongs to the Other category, which focuses on a collection of specialized peptides studied across various physiological domains including reproductive health, pigmentation, and growth factor signaling. You can explore more compounds in this category on the Other pillar page.
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Scientific References
Belchetz et al. — Pulsatile GnRH and gonadotropin response (Science, 1978)
Clinical use in hypothalamic hypogonadism restoration
Clinical use in hypogonadotropic hypogonadism shows restoration of fertility in both sexes
TRT adjunct studies show maintained intratesticular testosterone and sperm production
Comparative research between gonadorelin and HCG shows distinct but complementary HPG axis effects