FSH is FDA approved (FDA status current as of 1997-09-29). This regulatory status is provided for research and educational context only.

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.

How is FSH administered in research settings?

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

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.

Home›Research›Compare›FSH vs Gonadorelin

Peptide Comparison

FSH vs Gonadorelin

Q: What is the difference between FSH and Gonadorelin?

FSH: Binds FSH receptors on Sertoli cells in testes to support sperm maturation and inhibin B production. In women, binds granulosa cell FSH receptors to drive follicular growth and estradiol production. Gonadorelin: Synthetic GnRH that binds pituitary GnRH receptors; pulsatile dosing stimulates LH/FSH release; used to maintain HPG axis during TRT

Both are Reproductive & Hormonal peptides.

FSH

Follicle-Stimulating Hormone

Sexual HealthFDA ApprovedPrescription

No providers listed yet

Full FSH profile →

Gonadorelin

GnRH

Sexual HealthNot EvaluatedCompoundable

Half-life: ~2-4 minutes

25 providers listed

Full Gonadorelin profile →

Bottom line

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

Quick Verdict

FSH

Evidence

Established Clinical

Half-life

—

Gonadorelin

Evidence

Established Clinical

Half-life

~2-4 minutes

Which One Should You Choose?

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

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

Side-by-Side Comparison

FSH

Gonadorelin

Mechanism Family

Reproductive & Hormonal

Half-life

—

~2-4 minutes

FDA Status

approved

not evaluated

Admin Routes

subcutaneous, intramuscular

subcutaneous, intravenous

Availability

Prescription

Compoundable

Providers

None listed

25 listed

FDA Update

Sep 1997

—

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

FSH

Established ClinicalMeta-analysis · 12 key studies · most recent 2026

Gonadorelin

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

Research Citations

FSH

Meta-analysis2011 · Cochrane Database of Systematic Reviews

Recombinant versus urinary gonadotrophin for ovarian stimulation in assisted reproductive technology cycles

Meta-analysis2008 · Reprod Biomed Online

Efficacy and safety of hMG versus recombinant FSH: a meta-analysis

Cohort2026 · J Ovarian Res

Revisiting ESR in PCOS: an easily obtainable link to immune and metabolic dysregulation.

Cohort2026 · Zhonghua Liu Xing Bing Xue Za Zhi

[Association between sex hormone levels and high-sensitivity C-reactive protein in older adults aged 65 years…

+8 more

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

About FSH

Binds FSH receptors on Sertoli cells in testes to support sperm maturation and inhibin B production. In women, binds granulosa cell FSH receptors to drive follicular growth and estradiol production.

Research Areas

spermatogenesisfertility supportfollicular developmentovarian stimulationHPG axis

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

Safety Profile

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

FSH

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.

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.

Find Providers

Where to source these peptides

Providers offering

FSH

Browse directory →

Providers offering

Gonadorelin

25 listed

Browse directory →

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

More Reproductive & Hormonal Comparisons

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Educational research tools — not medical advice.