Triptorelin

Also known as: Decapeptyl

FDA-approved

Last verified: October 30, 2026

At a glance

FDA approval FDA-approved 4 applications
Randomized controlled trials 188 of 1,176 publications on PubMed
Registered clinical trials 313 75 active
Adverse event reports 8,403 6,176 classified as serious
  • Triptorelin is an FDA-approved drug, marketed as Trelstar, Triptodur (first approval: June 15, 2000).
  • PubMed lists 1,176 publications mentioning it, including 188 randomized controlled trials and 87 animal-only studies.
  • ClinicalTrials.gov lists 313 registered studies testing it (75 active).
  • FDA's adverse event system (FAERS) holds 8,403 reports mentioning it; 6,176 classified as serious. Reports do not prove causation.

Research topics

  • Gonadotropin-Releasing Hormone 59
  • Puberty, Precocious 31
  • Luteinizing Hormone 30
  • Ovulation Induction 24
  • Prostatic Neoplasms 18
  • Follicle Stimulating Hormone 17
  • Fertilization in Vitro 15
  • Pregnancy Rate 14
  • Leuprolide 13
  • Androgen Antagonists 11

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

Regulatory status

Drugs@FDA applications

Application Product Status First approval Sponsor
NDA020715 TRELSTAR Approved, marketed June 15, 2000 VERITY
NDA021288 TRELSTAR Approved, marketed June 29, 2001 VERITY
NDA022437 TRELSTAR Approved, marketed March 10, 2010 VERITY
NDA208956 TRIPTODUR KIT Approved, marketed June 29, 2017 AZURITY

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 1,176
  • Human (MeSH) 905
  • Animal only 87
  • Clinical trials 296
  • Randomized controlled trials 188
  • Systematic reviews & meta-analyses 24
  • Case reports 111
  • Retracted 0

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
313
Active
75
With posted results
49

Conditions studied

  • Infertility 60
  • Prostate Cancer 56
  • Infertility, Female 20
  • Breast Cancer 19
  • IVF 10
  • Endometriosis 9
  • Central Precocious Puberty 7
  • In Vitro Fertilization 7
  • Polycystic Ovary Syndrome 7
  • Prostate Adenocarcinoma 6
  • Adenomyosis 5
  • Poor Ovarian Response 5
Study Status Phase Start
Intranasal Nafarelin For Triggering Oocyte Maturation
NCT06763926 Fundacion Dexeus
Recruiting Phase 4 October 14, 2026
QL1706 Plus Neoadjuvant Endocrine Therapy in HR-Positive/HER2-Negative Breast Cancer With a Poor Response to Neoadjuvant Chemotherapy
NCT07782840 Hebei Medical University Fourth Hospital
Not yet recruiting Phase 2 October 1, 2026
Clinical Trial Evaluating the Biological Activity of a New Drug Identified as Prifetrastat (PF-07248144), Combined With Fulvestrant for the Treatment of Patients With Hormone Receptor Positive (HR+) and HER2 Negative (HER2-) Breast Cancer Extended to Other Organs.
NCT07340619 UNICANCER
Not yet recruiting Phase 2 September 18, 2026
Dual Trigger VS HCG Trigger for Final Oocyte Maturation in Normal Responders
NCT07861399 Al-Azhar University
Recruiting N/A September 1, 2026
Evaluating Hormone Therapy to Achieve Optimal Doses in Metastatic Prostate Cancer
NCT07751133 University College, London
Recruiting Phase 3 August 28, 2026
Efficacy and Safety of Darolutamide Combined With Docetaxel and ADT as Neoadjuvant Therapy for Locally Advanced Prostate Cancer.
NCT07730151 RenJi Hospital
Not yet recruiting Phase 2 August 1, 2026
Effect of GnRH Agonist in FET
NCT07653282 Assiut University
Not yet recruiting Phase 1, Phase 2 August 1, 2026
Assessing Efficacy of Neoadjuvant ADT in Localized High-Risk Prostate Cancer Patients Utilizing 18F-Flotufolastat PSMA PET/CT
NCT07455903 Baptist Health South Florida
Recruiting Phase 2 July 29, 2026
FET in Adenomyosis
NCT06913075 Indira IVF Hospital Pvt Ltd
Not yet recruiting N/A June 25, 2026
Triggering Oocyte Maturation in POSEIDON Group 3 and 4 Poor Responders Using Double Trigger or HCG Trigger
NCT07569289 Bedaya Hospital
Not yet recruiting Phase 2 June 1, 2026
Show 40 more studies
Study Status Phase Start
Triggering Ovulation in Normo-responders Using a Modified Dual Trigger Protocol or HCG Trigger
NCT07569302 Bedaya Hospital
Not yet recruiting Phase 2 June 1, 2026
Successive Doses of GnRH Agonist Versus Single Dose of GnRH Agonist to Trigger Ovulation in Hyper-responders
NCT07569315 Bedaya Hospital
Not yet recruiting Phase 2 June 1, 2026
Radiotherapy After Prostatectomy for Node Positive Prostate Cancer
NCT07477626 Sun Yat-sen University
Recruiting Phase 3 March 20, 2026
Supraphysiologic Testosterone Priming Induces Darolutamide Extended Response
NCT07142551 Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Recruiting Phase 2 March 9, 2026
Safety and Preliminary Efficacy Evaluation of LC-K76 Plus Anti-PD-1 Therapy in Patients With Metastatic Castration-Resistant Prostate Cancer (mCRPC)
NCT07389187 Shanghai Changzheng Hospital
Not yet recruiting Early phase 1 Feb 2026
Safety and Efficacy Evaluation of LC-K76 in Patients With Metastatic Hormone-Sensitive Prostate Cancer
NCT07389174 Shanghai Changzheng Hospital
Not yet recruiting Early phase 1 Feb 2026
Refining Fertility-sparing Treatment in Endometrial Carcinoma Based on Molecular Classification
NCT07319429 Fudan University
Recruiting Phase 2, Phase 3 January 25, 2026
Effect of Semaglutide on Embryo Quality in Overweight and Obese Patients Undergoing In Vitro Fertilization.
NCT07242534 Fundacion Dexeus
Recruiting Phase 4 January 19, 2026
CONVERT-HB1: Radical Prostatectomy After Systemic Therapy for High-volume Metastatic Hormone-sensitive Prostate Cancer
NCT07268794 Fudan University
Not yet recruiting Phase 2 November 30, 2025
COMPASS - COpenhagen MenoPAuSe Study
NCT07254429 Martin Blomberg Jensen
Recruiting Phase 2 October 2, 2025
The COSMYC Trial (COmbined Suppression of MYC)
NCT06922318 Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Recruiting Phase 2 August 19, 2025
Exploration of Treatment Effect of Novel Hormone Therapy Combined With Local Treatment Based on PSMA PET/CT Evaluation in mHSCP Patients
NCT06832774 Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine
Recruiting Phase 2 August 1, 2025
Ultra-Long GnRH-a Pretreatment for FET Outcomes in Patients With Deep Infiltrating Endometriosis
NCT07696351 Li-jun Ding
Recruiting Phase 4 August 1, 2025
Does Recombinant FSH (rFSH, i.g. Gonal F®) as Compared to Human Menopausal Gonadotrophin (hMG) Affect Telomere Length of Cumulus Cells During Antral Follicle Growth and Impact Blastocyst Status?
NCT06732843 ART Fertility Clinics LLC
Recruiting — July 23, 2025
Cardiovascular Health of Transgender Individuals During the Gender-affirming Pathway
NCT07187947 IRCCS Azienda Ospedaliero-Universitaria di Bologna
Recruiting — July 18, 2025
Triptorelin for the Prevention of Ovarian Damage in Adolescents and Young Adults With Cancer
NCT06513962 Children's Oncology Group
Recruiting Phase 3 February 27, 2025
Adaptive Androgen Deprivation and Docetaxel in Metastatic Castration Sensitive Prostate Cancer
NCT06734130 H. Lee Moffitt Cancer Center and Research Institute
Active, not recruiting Phase 2 January 10, 2025
Serum FSH Monitoring for Identification of an Optimal Range During Ovarian Stimulation
NCT06572930 ART Fertility Clinics LLC
Recruiting — December 16, 2024
Ovarian Hyperstimulation Syndrome Prevention
NCT06739759 Aljazeera Hospital
Recruiting N/A November 17, 2024
A Comparative Dose-finding Study of RS-113 in Patients With Metastatic Castration-resistant Prostate Cancer
NCT07553988 R-Pharm International, LLC
Active, not recruiting Phase 2 October 24, 2024
Ovulation Trigger Strategies in Low Ovarian Reserve (TRIGGERBEST)
NCT07816562 Fundación para la Investigación del Hospital Clínico de Valencia
Recruiting Phase 3 September 17, 2024
Neoadjuvant Chemotherapy With or Without GnRH Agonist for Premenopausal Triple-negative Early Breast Cancer Patients
NCT06225284 National Taiwan University Hospital
Recruiting Phase 2 August 22, 2024
A Study to Assess the Efficacy, Safety, and Pharmacokinetics of Debio 4326 in Pediatric Participants With Central Precocious Puberty (LIBELULA™ Clinical Trial)
NCT06129539 Debiopharm International SA
Active, not recruiting Phase 3 July 31, 2024
Efficacy, Metabolism and BMD of the 3-month TP Compared to the 1-month TP in ICPP
NCT06487143 Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Not yet recruiting Phase 4 July 1, 2024
Luteal Phase Support With GnRH Agonist After GnRH Agonist Triggering in IVF/ICSI Cycles
NCT06150703 Assistance Publique - Hôpitaux de Paris
Recruiting Phase 3 June 27, 2024
Stereotactic Body Radiation Therapy Plus Immediate or Delayed Androgen Receptor Pathway Inhibitor and Androgen Deprivation Therapy or Salvage Radiation Therapy for the Treatment of Prostate Cancer, DIVINE Trial
NCT06378866 Mayo Clinic
Recruiting Phase 2 June 3, 2024
Extra Luteinizing Hormone Improve Embryo Quality in IVF Patients With Low LH During Long GnRH-Agonist Treatment
NCT07128394 Nanjing University
Recruiting N/A February 1, 2024
Effect GnRH Agonist Administration in Endometriosis Cyst Patients
NCT06525155 Rumah Sakit Pusat Angkatan Darat Gatot Soebroto
Recruiting Phase 3 January 2, 2024
Treatment of High-Risk Prostate Cancer Guided by Novel Diagnostic Radio- and Molecular Tracers
NCT06282588 Cancer Research Antwerp
Recruiting Phase 2, Phase 3 December 13, 2023
Dose Escalation For INtraprostatic LEsions
NCT05851547 Ottawa Hospital Research Institute
Recruiting Phase 2 November 23, 2023
Evaluating the Addition of Adjuvant Chemotherapy to Ovarian Function Suppression Plus Endocrine Therapy in Premenopausal Patients With pN0-1, ER-Positive/HER2-Negative Breast Cancer and an Oncotype Recurrence Score Less Than or Equal to 25
NCT05879926 NRG Oncology
Recruiting Phase 3 October 18, 2023
Difluoromethylornithine and High Dose Testosterone With Enzalutamide in Metastatic Castration-Resistant Prostate Cancer
NCT06059118 Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Recruiting Phase 2 October 4, 2023
Surgery and ART For Endometrioma
NCT03717870 Università degli Studi dell'Insubria
Not yet recruiting N/A Oct 2023
Use of GnRHa During Chemotherapy for Fertility Protection
NCT05328258 Kenny Rodriguez-Wallberg
Recruiting Phase 3 March 31, 2023
Trial of Ultrahypofractionated Focal Salvage Radiotherapy for Isolated Prostate Bed Recurrence After Radical Prostatectomy
NCT05746806 Insel Gruppe AG, University Hospital Bern
Active, not recruiting N/A March 29, 2023
Short Versus Long-term Androgen Deprivation Therapy With Salvage Radiotherapy in Prostate Cancer. URONCOR 0624
NCT05781217 Instituto de Investigación en Oncología Radioterápica - Fundación Española de Oncología Radioterápic
Recruiting Phase 3 March 14, 2023
Elacestrant With/Without Triptorelin in Premenopausal Women With Luminal Breast Cancer
NCT05982093 SOLTI Breast Cancer Research Group
Recruiting Phase 2 February 3, 2023
Study of Neoadjuvant PARP Inhibition Followed by Radical Prostatectomy in Patients With Unfavorable Intermediate-Risk or High-Risk Prostate Cancer With Select HRR Gene Alterations
NCT05498272 Rana McKay, MD
Active, not recruiting Phase 2 February 1, 2023
Metastasis-directed Therapy for Oligorecurrent Prostate Cancer
NCT05352178 Universitaire Ziekenhuizen KU Leuven
Recruiting Phase 3 April 20, 2022
First Strike, Second Strike Therapies for High Risk Metastatic Castration Sensitive Prostate Cancer
NCT05189457 H. Lee Moffitt Cancer Center and Research Institute
Active, not recruiting Phase 2 January 25, 2022

All 313 studies on ClinicalTrials.gov ↗

Source: ClinicalTrials.gov · verified October 30, 2026

Adverse event reports

Reports
8,403
Serious
6,176
With death outcome
909

Most reported reactions

  • Off label use 622
  • Death 508
  • Ovarian hyperstimulation syndrome 455
  • Fatigue 276
  • Needle issue 246
  • Asthenia 245
  • Hot flush 233
  • Disease progression 232
  • Drug ineffective 230
  • Headache 228
  • Nausea 223
  • Product dose omission issue 204

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.

  • Trelstar HUMAN PRESCRIPTION DRUG Verity Pharmaceuticals Inc. June 30, 2026
  • TRIPTODUR HUMAN PRESCRIPTION DRUG Azurity Pharmaceuticals, Inc. September 14, 2025

Source: DailyMed / openFDA

Change history

No changes since monitoring began on October 30, 2026.