Hormonal & Sexual Health
Gonadorelin

Gonadorelin is synthetic GnRH built to the identical natural sequence, so the pituitary cannot tell it from the body's own. Its documented use is a question rather than a treatment: one injection, then luteinising hormone sampled over the following hour, and the shape of the response is the answer. In girls assessed for early puberty, a single 40-minute sample identified central precocious puberty with 98 percent sensitivity and 100 percent specificity. Given by pump in pulses instead, it induced ovulation in a retrospective cohort of 66 women with hypothalamic amenorrhoea, with a cumulative live birth rate of 65.9 percent per treatment. No human gonadorelin product is currently FDA-approved, and the old brand name, Factrel, survives on DailyMed as a veterinary product.
Last updated
Mechanism
Binds pituitary GnRH receptors to release luteinising hormone and follicle-stimulating hormone from the anterior pituitary.
Reported effects
What sources associate with this compound. Reported categories, not outcomes we have graded — each would need its own citation and rung.
- Pituitary function testing
- Gonadotropin response research
- Reproductive endocrinology context
Dosing on file unverified
100 mcg (0.1 mg) SC/IV single dose; 5 mcg q90min (range 1-20 mcg) IV by pump × 21 days
Carried from a source that labels it unverified, and reproduced with that label attached. A record of what is reported, not a recommendation. No citation on this page establishes it.
Literature on file 11
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animal in vivo
Estradiol treatment and double dose of GnRH for resynchronization protocols and timed artificial insemination in lactating dairy cows. graded on: an animal model — read from the indexed abstract — “cattle”
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review or editorial
The neuroendocrine basis for parental care in teleost fish. graded on: indexed as "Review" - secondary literature, not a study — “Review”
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human observational
Diagnostic Usefulness of Subcutaneous Triptorelin Stimulation Testing in the Evaluation of Central Precocious Puberty in Girls. graded on: retrospective diagnostic-accuracy review of 662 girls — read from the abstract — “abstract review”
- animal in vivo
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animal in vivo
Increasing gonadorelin hydrochloride dose at the first GnRH of breeding Ovsynch enhances luteinizing hormone release, ovulatory response, and pregnancy in first-service lactating dairy cows. graded on: an animal model — read from the indexed abstract — “cattle”
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human RCT
NCT01976728: A Multicenter, Double-Blind, Randomized, Placebo-Controlled Study Evaluating Three Doses of Subcutaneous Pulsatile GnRH Administered Via OmniPod Pump for Ovulation Induction in Female Subjects With Primary Amenorrhea With Hypogonadotropic Hypogonadism graded on: a randomised study — “Randomized, Placebo-Controlled Study”
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human RCT
NCT04037254: Randomized Phase II Trial of Niraparib With Standard Combination Radiotherapy and Androgen Deprivation Therapy (ADT) in High Risk Prostate Cancer (With Initial Phase I) (NADIR*) *Randomized Phase II Trial of Niraparib With Standard Combination Androgen DeprIvation Therapy (ADT) and Radiotherapy in High Risk Prostate Cancer (With Initial Phase I) graded on: a randomised trial — “Randomized Phase II Trial”
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human observational
NCT01381016: Estrogen Sensitivity and Ovulatory Dysfunction in Obesity graded on: a registered clinical study — “clinicaltrials.gov”
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human observational
NCT01457703: Reproductive Hormonal Alterations in Obesity, AIMS #1 & #2 graded on: a registered clinical study — “clinicaltrials.gov”
Not graded
2 citations whose study design could not be read from the title. Left ungraded rather than guessed at.
- not graded
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not graded
NCT04390646: Effect of Pulsatile GnRH Therapy on Cognition in Down Syndrome: Randomized Placebo Control Study graded on: NCT04390646 is recruiting and has posted no results - a registration, not a reported outcome — “NCT04390646”
Identity
Skeletal formulathe canonical depiction
Drawn by PubChem from CID 638793, the identifier on this record.
- Molecular weight
- 1182.3
- Molecular formula
- C55H75N17O13
- CAS number
- 33515-09-2
- PubChem CID
- 638793
- InChI key
- XLXSAKCOAKORKW-AQJXLSMYSA-N
- Sequence
- XHWSYGLRPG
- SMILES
- CC(C)C[C@@H](C(=O)N[C@@H](CCCN=C(N)N)C(=O)N1CCC[C@H]1C(=O)NCC(=O)N)NC(=O)CNC(=O)[C@H](CC2=CC=C(C=C2)O)NC(=O)[C@H](CO)NC(=O)[C@H](CC3=CNC4=CC=CC=C43)NC(=O)[C@H](CC5=CN=CN5)NC(=O)[C@@H]6CCC(=O)N6
- InChI
- InChI=1S/C55H75N17O13/c1-29(2)19-38(49(80)67-37(9-5-17-60-55(57)58)54(85)72-18-6-10-43(72)53(84)62-25-44(56)75)66-46(77)26-63-47(78)39(20-30-11-13-33(74)14-12-30)68-52(83)42(27-73)71-50(81)40(21-31-23-61-35-8-4-3-7-34(31)35)69-51(82)41(22-32-24-59-28-64-32)70-48(79)36-15-16-45(76)65-36/h3-4,7-8,11-14,23-24,28-29,36-43,61,73-74H,5-6,9-10,15-22,25-27H2,1-2H3,(H2,56,75)(H,59,64)(H,62,84)(H,63,78)(H,65,76)(H,66,77)(H,67,80)(H,68,83)(H,69,82)(H,70,79)(H,71,81)(H4,57,58,60)/t36-,37-,38-,39-,40-,41-,42-,43-/m0/s1
Notes unverified prose
Diagnostic and fertility use; Lutrepulse; Drugs.com; MIMS; Diagnostic/fertility use
Not on file 1
All 8 tracked fields hold a value on this record. 1 further absence is named below. A blank field is a bug; a named absence is a finding.
- half-lifenothing we hold supplies it
Each field links to every other record missing the same thing. The full ledger holds 765 gaps across 163 records.
Listed prices 51
What 26 shops we track listed for Gonadorelin, read from their own public catalogues on 2026-09-14. We take no commission on these and they are not ranked by any payment — how vendors are scored.
Compare prices51 listings from 26 shops
| Vendor | Size | Price | Per mg |
|---|---|---|---|
| Direct Peptides Canada | 2 mg | £12.38 GBP | £6.19/mg |
| Direct Peptides USA | 2 mg | £12.38 GBP | £6.19/mg |
| Pharma Lab Global Canada | 2 mg | £12.91 GBP | £6.46/mg |
| Direct Peptides Canada | 2 mg | £14.96 GBP | £7.48/mg |
| Direct Peptides USA | 2 mg | £14.96 GBP | £7.48/mg |
| Pharma Lab Global Canada | 2 mg | £15.49 GBP | £7.75/mg |
| Direct Peptides Canada | 2 mg | £21.36 GBP | £10.68/mg |
| Direct Peptides USA | 2 mg | £21.36 GBP | £10.68/mg |
| Pharma Lab Global Canada | 2 mg | £21.89 GBP | £10.95/mg |
| Direct Peptides Canada | 2 mg | £29.91 GBP | £14.96/mg |
| Direct Peptides USA | 2 mg | £29.91 GBP | £14.96/mg |
| Pharma Lab Global Canada | 2 mg | £30.98 GBP | £15.49/mg |
| Direct Peptides Canada | 2 mg | £40.38 GBP | £20.19/mg |
| Direct Peptides USA | 2 mg | £40.38 GBP | £20.19/mg |
| Pharma Lab Global Canada | 2 mg | £41.82 GBP | £20.91/mg |
| Direct Peptides Canada | 2 mg | £41.96 GBP | £20.98/mg |
| Direct Peptides USA | 2 mg | £41.96 GBP | £20.98/mg |
| Pharma Lab Global Canada | 2 mg | £42.49 GBP | £21.25/mg |
| Direct Peptides Canada | size not listed | £20.38 GBP | — |
| Direct Peptides USA | size not listed | £20.38 GBP | — |
| Pharma Lab Global Canada | size not listed | £20.91 GBP | — |
| Pharma Lab Global Canada | size not listed | £36.82 GBP | — |
| Direct Peptides Canada | size not listed | £37.75 GBP | — |
| Direct Peptides USA | size not listed | £37.75 GBP | — |
| Vendor | Size | Price | Per mg |
|---|---|---|---|
| Peptagon | 10 mg | $36.00 USD | $3.60/mg |
| Peptagon | 5 mg | $29.00 USD | $5.80/mg |
| Liberty Peptides | 10 mg | $64.00 USD | $6.40/mg |
| Paramount Peptides | 10 mg | $65.45 USD | $6.54/mg |
| Nationwide Peptides | 5 mg | $33.00 USD | $6.60/mg |
| Pure Peptide Labs | 5 mg | $39.95 USD | $7.99/mg |
| aminousa | 10 mg | $80.00 USD |
$8.00/mg |
| Oasis Labs | 10 mg | $84.00 USD | $8.40/mg |
| Pure Health Peptides (GLP Supplies) | 2 mg | $17.00 USD | $8.50/mg |
| USA Peptide Sciences | 10 mg | $85.00 USD | $8.50/mg |
| BioGenix Peptides | 2 mg | $23.00 USD | $11.50/mg |
| Swiss Chems ships worldwide | 2 mg | $24.95 USD | $12.47/mg |
| Nationwide Peptides | 2 mg | $25.00 USD | $12.50/mg |
| Umbrella Labs | 2 mg | $25.99 USD | $12.99/mg |
| Behemoth Labz | 5 mg | $93.98 USD | $18.80/mg |
| Behemoth Labz | 2 mg | $37.60 USD | $18.80/mg |
| Peptides.GG | 2 mg | $40.00 USD | $20.00/mg |
| Umbrella Labs | 2 mg | $54.99 USD | $27.50/mg |
| Soma - | 2 mg | $59.00 USD | $29.50/mg |
| Pure Lab Peptides | 2 mg | $79.99 USD | $39.99/mg |
| PureRawz ships worldwide | 2 mg | $91.23 USD | $45.62/mg |
| Peptide Works | size not listed | $15.00 USD | — |
| peaklabpeptides.com | size not listed | $31.00 USD | — |
| Vendor | Size | Price | Per mg |
|---|---|---|---|
| Peptide Shop Canada | 10 mg | $60.30 CAD | $6.03/mg |
| Canada Peptide | 10 mg | $85.99 CAD | $8.60/mg |
| Northern Peptides | 5 mg | $65.00 CAD | $13.00/mg |
| Pacific Peptides | 5 mg | $75.00 CAD | $15.00/mg |
None of these shops lists your destination. Choose “Show all” to see every listing we hold.
Prices are the vendor's own listing, reproduced with the date we read it — never converted between currencies, and compared per milligram only where the vendor states the vial size.