Is Gonadorelin FDA approved?

Gonadorelin is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

LH is FDA approved (FDA status current as of 2004-10-08). This regulatory status is provided for research and educational context only.

How is Gonadorelin administered in research settings?

In research settings, Gonadorelin is typically administered via the subcutaneous or intravenous routes. PeptideBase does not provide dosing or administration instructions.

How is LH administered in research settings?

In research settings, LH is typically administered via the subcutaneous or intramuscular routes. PeptideBase does not provide dosing or administration instructions.

Home›Research›Compare›Gonadorelin vs LH

Peptide Comparison

Gonadorelin vs LH

Q: What is the difference between Gonadorelin and LH?

Gonadorelin: Synthetic GnRH that binds pituitary GnRH receptors; pulsatile dosing stimulates LH/FSH release; used to maintain HPG axis during TRT LH: Binds LH receptors on testicular Leydig cells, stimulating the cholesterol → testosterone biosynthetic pathway. In women, the LH surge triggers ovulation and supports luteal phase progesterone production.

Both are Reproductive & Hormonal peptides.

Gonadorelin

GnRH

Sexual HealthNot EvaluatedCompoundable

Half-life: ~2-4 minutes

25 providers listed

Full Gonadorelin profile →

LH

Luteinizing Hormone

Sexual HealthFDA ApprovedResearch Only

No providers listed yet

Full LH profile →

Bottom line

LH is FDA-approved, while Gonadorelin is not evaluated — the clearest structural difference between them.

Quick Verdict

Gonadorelin

Evidence

Established Clinical

Half-life

~2-4 minutes

Evidence

Clinical

Half-life

—

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Gonadorelin
Further along in FDA review	LH
More provider options (25 vs 0)	Gonadorelin

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison

Gonadorelin

Mechanism Family

Reproductive & Hormonal

Half-life

~2-4 minutes

—

FDA Status

not evaluated

approved

Admin Routes

subcutaneous, intravenous

subcutaneous, intramuscular

Availability

Compoundable

Research Only

Providers

25 listed

None listed

FDA Update

—

Oct 2004

Avail. Notes

Previously FDA-approved as Factrel (NDA 017019). Voluntarily discontinued by manufacturer. Included on the FDA 503B outsourcing-facility bulk-substances list (Category 1), not the 503A pharmacy list. Prescription compounded product.

—

Research Evidence

Gonadorelin

Established ClinicalMeta-analysis · 5 key studies · most recent 2026

ClinicalRCT · 9 key studies · most recent 2026

Research Citations

Gonadorelin

Cohort2026 · J Reprod Dev

Effect of post-insemination GnRH analogue administration on pregnancy rates in repeat-breeder cows: compariso…

Cohort2026 · J Dairy Sci

Increasing gonadorelin hydrochloride dose at the first GnRH of breeding Ovsynch enhances luteinizing hormone…

Cohort2025 · Translational Andrology and Urology

Therapeutic effects of a pulsatile GnRH pump on adult male patients with congenital hypogonadotropic hypogona…

Meta-analysis2018 · Fertility and Sterility

Efficacy and safety of pulsatile gonadotropin-releasing hormone therapy among patients with idiopathic and fu…

+1 more

Cohort2026 · Vet Res Commun

Effect of recombinant human follicle-stimulating hormone or equine chorionic gonadotropin on the ovarian resp…

Cohort2026 · J Neuroendocrinol

Pulsatile LH release in male and female Sprague Dawley and Wistar rats in different reproductive states.

Review2026 · Neuroendocrinology

Stress as a Neuroendocrine Modulator of the Reproductive Axis: Roles of Glucocorticoids, Kisspeptin and Serot…

Cohort2026 · Genetics

Functional Landscape of Zebrafish Gonadotropins and Receptors: A Comprehensive Genetic Analysis.

+5 more

About Gonadorelin

Synthetic GnRH that binds pituitary GnRH receptors; pulsatile dosing stimulates LH/FSH release; used to maintain HPG axis during TRT

Research Areas

pulsatile LH and FSH stimulation from the pituitarytesticular function and testosterone production maintenancefertility preservation alongside TRT (FSH pathway intact)hypothalamic-pituitary axis restoration in hypogonadism

About LH

Binds LH receptors on testicular Leydig cells, stimulating the cholesterol → testosterone biosynthetic pathway. In women, the LH surge triggers ovulation and supports luteal phase progesterone production.

Research Areas

testosterone stimulationfertility supportHPG axis supportovulation inductionLeydig cell activation

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

Gonadorelin

Reported (Unverified — Pending Clinical Review)

continuous high-dose (causes receptor downregulation)

No established clinical contraindications

Suggested Monitoring

Total testosteroneLHFSHEstradiol (E2)SHBGProlactin

Standard reproductive endocrinology panels establish HPG axis baseline. LH and FSH confirm pituitary response to gonadorelin; testosterone, E2, and SHBG reflect downstream gonadal output.

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

Suggested Monitoring

Under clinical review

Being verified by our medical team before we display monitoring guidance for this peptide.

Find Providers

Where to source these peptides

Providers offering

Gonadorelin

25 listed

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Providers offering

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PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

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Educational research tools — not medical advice.