Ganirelix

Also known as: Orgalutran · Fyremadel

FDA-approved

Last verified: October 30, 2026

At a glance

FDA approval FDA-approved 8 applications
Randomized controlled trials 48 of 196 publications on PubMed
Registered clinical trials 106 11 active
Adverse event reports 2,644 1,400 classified as serious
  • Ganirelix is an FDA-approved drug, marketed as Ganirelix, Fyremadel (first approval: July 29, 1999).
  • PubMed lists 196 publications mentioning it, including 48 randomized controlled trials and 8 animal-only studies.
  • ClinicalTrials.gov lists 106 registered studies testing it (11 active).
  • FDA's adverse event system (FAERS) holds 2,644 reports mentioning it; 1,400 classified as serious. Reports do not prove causation.

Research topics

  • Gonadotropin-Releasing Hormone 161
  • Hormone Antagonists 99
  • Ovulation Induction 86
  • Luteinizing Hormone 65
  • Fertilization in Vitro 60
  • Follicle Stimulating Hormone 51
  • Pregnancy Rate 42
  • Estradiol 36
  • Chorionic Gonadotropin 25
  • Infertility, Female 25

Most frequent MeSH subject headings in the latest PubMed records (English, as indexed).

Regulatory status

Drugs@FDA applications

Application Product Status First approval Sponsor
NDA021057 GANIRELIX ACETATE Approved, marketed July 29, 1999 ORGANON USA ORGANON
ANDA204246 FYREMADEL Approved, marketed November 30, 2018 SUN PHARM
ANDA212613 GANIRELIX ACETATE Approved, marketed April 7, 2022 AMPHASTAR PHARMS INC
ANDA214996 GANIRELIX ACETATE Approved, marketed June 6, 2022 MEITHEAL
ANDA215658 GANIRELIX ACETATE Approved, marketed February 28, 2023 GLAND
ANDA216075 GANIRELIX ACETATE Approved, marketed November 16, 2023 LUPIN
ANDA218855 GANIRELIX ACETATE Approved, marketed April 23, 2025 QILU
ANDA219454 GANIRELIX ACETATE Approved, discontinued June 27, 2025 TRIS PHARMA INC

Source: Drugs@FDA (openFDA) · verified October 30, 2026 · API query

FDA compounding safety list

Not on FDA's list of bulk drug substances that may present significant safety risks in compounding.

Source: FDA.gov — Category 2 bulk drug substances · verified October 30, 2026

Removal of a substance from a regulatory list does not mean it has been approved. A "research use only" label does not make a product safe or legal for human use.

Scientific publications

  • All publications 196
  • Human (MeSH) 165
  • Animal only 8
  • Clinical trials 62
  • Randomized controlled trials 48
  • Systematic reviews & meta-analyses 4
  • Case reports 8
  • Retracted 1

Counts are PubMed records that mention the peptide in the title or abstract. Categories overlap, and a mention is not the same as testing the peptide as a treatment. Each number opens the exact PubMed search. Effects seen in laboratory or animal studies may not occur in humans. A registered clinical trial does not show that a substance is effective or safe.

Latest publications

Source: PubMed (NCBI) · verified October 30, 2026

Clinical trials

Registered
106
Active
11
With posted results
16

Conditions studied

  • Infertility 33
  • IVF 9
  • Infertility, Female 8
  • In Vitro Fertilization 7
  • Polycystic Ovary Syndrome 6
  • Premature Ovarian Failure 4
  • Pregnancy 4
  • Ovulation Induction 3
  • Ovarian Stimulation 3
  • Diminished Ovarian Reserve 3
  • Subfertility 3
  • Controlled Ovarian Stimulation 3
Study Status Phase Start
Is the Diurnal Variation in Circulating Levels of Cortisol Reflected in Follicular Fluid of Preovulatory Follicles Close to Ovulation?
NCT06877429 ART Fertility Clinics LLC
Not yet recruiting — December 30, 2026
Oral GnRH Antagonist (Linzagolix) Versus Injectable GnRH Antagonist in Controlled Ovarian Stimulation for In Vitro Fertilization: A Randomized Controlled Non-Inferiority Trial With a Concurrent Comparator Cohort Undergoing Progestin-Primed Ovarian Stimulation (PPOS)
NCT07732348 Centro A.M.B.R.A. (Associazione Medici e Biologi per la Riproduzione Assistita)
Not yet recruiting N/A Sep 2026
hCG Priming in Women With Diminished Ovarian Reserve
NCT07108621 Kristine Loessl
Recruiting Phase 3 January 25, 2026
IVF Outcomes With Time-Lapse Culture: Comparison Between PPOS and GnRH Antagonist Protocols
NCT07409493 Hanoi Medical University
Recruiting N/A January 21, 2026
PPOS (Progestin Primed Ovarian Stimulation) and Corifollitropin Alfa (CFA) Cross-over Study
NCT06175832 University Hospital, Ghent
Recruiting Phase 4 January 27, 2025
Disentangling the Effects of Daily Stress, Sleep, and Sex Hormones on Accelerated Vascular Aging in Midlife Women
NCT06745466 University of Delaware
Recruiting Phase 4 November 15, 2024
Impact of IVF Hormonal Therapy on Endometrial Receptivity and Endometrial Senescent Cell Pathological Accumulation
NCT06280560 Fundación IVI
Recruiting — February 1, 2024
DPOS Versus GnRH Antagonist Protocol for Oocyte Accumulation in Low Ovarian Reserve Patients: An RCT
NCT05847283 Tam Anh TP. Ho Chi Minh General Hospital
Recruiting N/A June 22, 2023
Hormonal Mechanisms of Sleep Restriction - Axis Study in Older Men and Postmenopausal Women
NCT04037605 Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Active, not recruiting Early phase 1 February 9, 2020
Ovarian Hyperstimulation and Fibrin Clot Properties.
NCT04166825 Jagiellonian University
Recruiting N/A November 18, 2019
Show 40 more studies
Study Status Phase Start
Hormonal Mechanisms of Sleep Restriction - Axis Study
NCT03142893 Peter y. Liu
Active, not recruiting Phase 1 May 8, 2017
Protocol with Progestin-primed Ovarian Stimulation (PPOS) from the Beginning of Stimulation Versus Protocol with GnRH Antagonists for Ovarian Stimulation in Patients Undergoing DUOSTIM with Embryo Accumulation for PGT-A.
NCT06637189 Ginefiv
Unknown status Phase 4 October 15, 2024
Possible Action of Resveratrol in Improving the Outcomes of IVF/ICSI in Couples With Unexplained Infertility
NCT06481696 Andros Day Surgery Clinic
Unknown status N/A June 1, 2024
Sub-therapeutic GnRH- Antagonist Treatment to Rectify LH Pulsatility in Lean Women With PCOS.
NCT05751252 University Hospital, Lille
Completed Early phase 1 April 17, 2024
Efficacy of Micronized Natural Progesterone vs GnRH Antagonist in the Prevention of LH Peak During Ovarian Stimulation.
NCT05954962 Instituto Bernabeu
Completed Phase 4 December 23, 2023
To Compare the Efficacy and Safety of Oral SHR 7280 Tablets With Ganirelix Acetate Injection in Infertile Female Subjects
NCT05994378 Jiangsu HengRui Medicine Co., Ltd.
Completed Phase 3 August 29, 2023
To Investigate Efficacy and Safety of a Single Injection of GenSci094 for Ovarian Stimulation Using Daily Recombinant FSH as Reference
NCT06091436 Changchun GeneScience Pharmaceutical Co., Ltd.
Completed Phase 3 March 24, 2023
Combining Interventions of Fertility Preservation to Mitigate Fertility Loss After Breast Cancer
NCT04586686 Universitair Ziekenhuis Brussel
Unknown status N/A November 1, 2022
DEPO-Trigger Trial: GnRH Agonist DEPOt TRIGGER for Final Oocyte Maturation
NCT04616729 Universitair Ziekenhuis Brussel
Unknown status Phase 1, Phase 2 November 1, 2022
INTEnsity of ovariaN Stimulation and Embryo Quality
NCT04983173 Fundación Santiago Dexeus Font
Completed Phase 4 November 23, 2021
GnRH Antagonist Pre-treatment in the Early Follicular Phase for Resolution of a Baseline Functional Ovarian Cyst
NCT04993924 Assaf-Harofeh Medical Center
Unknown status Phase 4 May 1, 2021
GnRH Antagonist Pre-treatment for the Prevention of Asynchronous Follicular Growth
NCT05071339 Assaf-Harofeh Medical Center
Unknown status Phase 4 April 1, 2021
hCG Priming in Women With Low Ovarian Reserve
NCT04643925 Copenhagen University Hospital, Rigshospitalet
Completed Phase 4 December 27, 2020
Desogestrel Versus GnRH Antagonist in IVF/ICSI
NCT04728659 Casa di Cura Privata Villa Mafalda
Unknown status Phase 4 October 1, 2020
The LUTEAL Trial: Luteal Stimulation vs. Estrogen Priming Protocol
NCT04447872 Northwell Health
Unknown status N/A September 15, 2020
The Rate of Embryo Euploidy in Progestin-primed Ovarian Stimulation Cycles
NCT04654741 Casa di Cura Privata Villa Mafalda
Unknown status Phase 4 September 1, 2020
Live Birth Rate Between PPOS and GnRH Antagonist Protocol in Patients With Anticipated High Ovarian Response
NCT04414761 ShangHai Ji Ai Genetics & IVF Institute
Completed Phase 3 June 4, 2020
An Observational Study of Follitropin Alpha Biosimilar: the Real-world Data
NCT04854707 IVFarma LLC Results posted
Completed — January 12, 2020
"Study of the Effects of Serum and Follicular Fluid Relaxin Levels on Ovarian Function in IVF Cycles"
NCT04458454 D.O. Ott Research Institute of Obstetrics, Gynecology, and Reproductology
Completed — December 2, 2019
Micronized Progesterone vs Gonadotropin-releasing Hormone (GnRH) Antagonist in Freeze-all IVF Cycles.
NCT04108039 Fundacion Dexeus
Completed N/A September 25, 2019
Anti-Müllerian Hormone (AMH) Measured With Fully Automated Assay Versus AFC in the Prediction of Ovarian Response
NCT04168892 Andros Day Surgery Clinic
Completed — September 20, 2019
Initiation of Ovarian Stimulation With Recombinant-human FSH (Bemfola®) in the Late Follicular Phase
NCT03767218 Universitair Ziekenhuis Brussel
Completed Phase 3 November 1, 2018
Corifollitropin Alpha and Ovarian Response
NCT04416607 Hospital de Clinicas de Porto Alegre
Completed N/A June 15, 2018
Luteal Phase-start Ovarian Stimulation With Corifollitropin Alfa
NCT03555942 Fundacion Dexeus
Completed N/A May 8, 2018
Letrozole in Stimulated IVF Cycles
NCT02912988 The University of Hong Kong
Completed Phase 3 March 1, 2018
Comparative Study on the Efficacy of Ovarian Stimulation Protocols on the Success Rate of ICSI in Female Infertility
NCT04071574 Lebanese University
Completed Phase 1, Phase 2 February 1, 2018
Mechanisms of Hypertension in Women With Polycystic Ovary Syndrome
NCT04327934 Yale University Results posted
Terminated Early phase 1 December 1, 2017
DuoStim in Cases of PGT: Comparison of Embryo Quantity and Embryonic Quality Using MitoScore
NCT03291821 IVI Madrid
Completed N/A December 1, 2017
Cetrorelix and Ganirelix Flexible Protocol for (IVF)
NCT03477929 Università degli Studi 'G. d'Annunzio' Chieti e Pescara
Unknown status Phase 4 November 15, 2017
Effectiveness of Estradiol Valerate Pretreatment in Antagonist Protocol for Poor Ovarian Response Patient
NCT03300518 Reproductive & Genetic Hospital of CITIC-Xiangya
Completed N/A November 15, 2017
Usefulness of Medroxyprogesterone Acetate in Follicular Phase in Oocyte Donors. Undergoing Ovarian Stimulation
NCT03300960 Instituto Valenciano de Infertilidad, IVI VALENCIA
Completed Phase 3 October 20, 2017
Coenzyme Q10 Phase III Trial in Gulf War Illness
NCT02865460 VA Office of Research and Development Results posted
Completed Phase 3 July 24, 2017
Single Follicular Dexarelix for LH Suppression During Ovarian Stimulation in Oocyte Donors.
NCT03861715 Assisting Nature
Unknown status — Jan 2017
To Compare and Evaluate the Efficacy and Safety of Ganilever PFS(Prefilled Syringe) and Orgalutran®
NCT03051087 LG Life Sciences
Completed Phase 4 Oct 2016
Menopause Effects on Vascular Function
NCT03236545 University of Delaware
Completed N/A July 1, 2016
Progevera 10 mg® Versus Orgalutran® in Ovarian Stimulation Cycles of Oocyte Donors
NCT02796105 Fundació Privada Eugin
Completed Phase 4 Jun 2016
Effectiveness and Safety Study of Fixed Versus Flexible of Gonadotropin-releasing Hormone Antagonist Protocol
NCT02635607 Chong Qing Reproducive and Genetic Institute
Unknown status N/A Jan 2016
Type of Gonadotropin and Embryo Kinetics of Development
NCT02402192 IVI Madrid
Terminated Phase 4 Apr 2015
Letrozole in Assisted Reproductive Technology
NCT02429999 Assiut University
Unknown status Phase 2 Apr 2015
Efficacy of Recombinant FSH/GnRH Antagonist Protocol With and Without LH Adjunct for Egg Bank Donation
NCT02069808 Michigan Reproductive Medicine
Completed Phase 4 Apr 2014

All 106 studies on ClinicalTrials.gov ↗

Source: ClinicalTrials.gov · verified October 30, 2026

Adverse event reports

Reports
2,644
Serious
1,400
With death outcome
12

Most reported reactions

  • Ovarian hyperstimulation syndrome 809
  • Ascites 258
  • Dyspnoea 116
  • Headache 112
  • Nausea 111
  • Drug ineffective 107
  • Abdominal distension 105
  • No adverse event 104
  • Needle issue 95
  • Pleural effusion 92
  • Product storage error 91
  • Injection site pain 89

Adverse event reports do not prove that the substance caused these effects. Side effects not listed here may still occur. Reaction terms are MedDRA terms as reported to FAERS.

Source: FDA FAERS (FAERS data as of July 30, 2026) · verified October 30, 2026 · API query

FDA prescribing information

Official US prescribing information. Dosing sections are intentionally not shown.

Source: DailyMed / openFDA

Change history

No changes since monitoring began on October 30, 2026.