Reported Reactions

Drugs › Gonadotropin releasing hormone receptor agonist

Brand name · Leuprolide acetate

Eligard: adverse event reports filed with FDA

44,385 reports list it as a suspect or interacting product, 2004–2026. Class: Gonadotropin releasing hormone receptor agonist.

44,385
reports as suspect product
0.2% of all reports · about 1,988 a year
2,388
reports, 12 months to June 2026
7,398 in the 12 months before
38.1%
marked serious by the reporter
50.5% across the class
17.3%
record death among outcomes, as reported
7,657 reports · not verified by FDA

Between March 2004 and June 2026, 44,385 adverse event reports received by FDA list the brand name Eligard (leuprolide acetate) as a suspect or interacting product. Reports that mention it only as a concomitant medication (2,126) are left out of every figure here.

In the 12 months to June 2026, 2,388 reports listed it, down 68% from 7,398 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Over its reporting history that is about 1,988 reports a year and 0.2% of the 20,646,523 reports in the database, and 72.3% of the reports for the gonadotropin releasing hormone receptor agonist class. How many people take it is not in the data, so a count is not a rate of occurrence.

Reporters most often recorded intercepted product preparation error (20.3%), syringe issue (17.4%) and device leakage (13.7%). A report can list several reactions, so shares add to more than 100%; 1,474 different terms appear across these reports. Intercepted product preparation error is recorded in 20.3% of these reports, with no counterpart in the median gonadotropin releasing hormone receptor agonist drug (0%).

38.1% of the reports are marked serious by the reporter (50.5% across the class); 17.3% record death among the outcomes and 10.2% record hospitalisation, as reported. 56% of the reports came from consumers, and the largest patient age group is 75 and over (23.7%). FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."

Reports by month, five years

07341,467Jul 2021: 517Aug 2021: 408Sep 2021: 374Oct 2021: 563Nov 2021: 622Dec 2021: 6162022Jan 2022: 117Feb 2022: 166Mar 2022: 483Apr 2022: 663May 2022: 1,467Jun 2022: 627Jul 2022: 445Aug 2022: 668Sep 2022: 374Oct 2022: 335Nov 2022: 401Dec 2022: 4442023Jan 2023: 306Feb 2023: 344Mar 2023: 547Apr 2023: 501May 2023: 517Jun 2023: 479Jul 2023: 392Aug 2023: 565Sep 2023: 691Oct 2023: 677Nov 2023: 601Dec 2023: 5042024Jan 2024: 594Feb 2024: 624Mar 2024: 667Apr 2024: 694May 2024: 830Jun 2024: 721Jul 2024: 713Aug 2024: 649Sep 2024: 672Oct 2024: 748Nov 2024: 423Dec 2024: 5752025Jan 2025: 811Feb 2025: 1,124Mar 2025: 796Apr 2025: 405May 2025: 159Jun 2025: 323Jul 2025: 273Aug 2025: 197Sep 2025: 239Oct 2025: 208Nov 2025: 169Dec 2025: 2142026Jan 2026: 172Feb 2026: 186Mar 2026: 196Apr 2026: 277May 2026: 117Jun 2026: 140

Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

By year received

03,9557,9102004: 1420042005: 142006: 172007: 2220072008: 202009: 382010: 2820102011: 232012: 602013: 6320132014: 1672015: 6172016: 1,88820162017: 1,3162018: 1,3422019: 2,28420192020: 4,6002021: 5,6422022: 6,19020222023: 6,1242024: 7,9102025: 4,91820252026: 1,088

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Eligard reports recording the termmedian drug in gonadotropin releasing hormone receptor agonist

  1. Syringe issue17.4%7,741
  2. Device leakagethe device leaked13.7%6,086
  3. Deaththe patient died; cause not stated by this term13.6%6,049
  4. Hot flusha hot flush13.4%5,933
  5. Wrong technique in product usage processthe product was used in the wrong way12%5,316
  6. Injection site painpain where the injection was given9.3%4,126
  7. Fatiguetiredness6.5%2,890
  8. Intentional product use issuedeliberate use not as intended3.7%1,631
  9. Astheniaweakness or lack of energy2.9%1,301
  10. Off label useused for a purpose or in a way not on the label2.6%1,147
  11. Intercepted medication error2.5%1,124
  12. Falla fall2.5%1,099
  13. Drug ineffectivethe medicine did not work as expected2.1%954
  14. Weight increasedweight gain2.1%928
  15. Device occlusionthe device blocked2%903
  16. Inappropriate schedule of product administrationthe product was taken at the wrong times1.9%837
  17. Dizzinesslight-headedness or unsteadiness1.8%785
  18. Arthralgiajoint pain1.7%771
  19. Needle issuea problem with the needle1.4%630
  20. Weight decreasedweight loss1.3%581
  21. Malaisegeneral feeling of being unwell1.3%578
  22. Back painback pain1.3%574
  23. Injection site haemorrhagebleeding where the injection was given1.3%572

Top 30 of 1,474 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 7 drugs in the gonadotropin releasing hormone receptor agonist class; it describes the reports, not the patients. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Outcomes recorded

Death17.3%7,657
Life-threatening0.5%204
Hospitalisation (initial or prolonged)10.2%4,525
Disability0.4%189
Congenital anomaly0%4
Other serious18.5%8,205
Not serious61.9%27,459

Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 61,409 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."

Patients and reporters

Patient age

Under 20%5
2 to 111.6%730
12 to 170.2%82
18 to 440.6%279
45 to 645.9%2,620
65 to 7415.6%6,920
75 and over23.7%10,505
Age not given52.4%23,244

Patient sex

Female3.9%1,717
Male82.1%36,424
Not given14.1%6,244

Who reported

Physician7.7%3,425
Pharmacist10.4%4,596
Other health professional25.6%11,353
Lawyer0%1
Consumer or non-health professional56%24,867
Not given0.3%143

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 24.5% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Prostate cancer33,72376%
Precocious puberty9092%
Prostate cancer metastatic6171.4%
Breast cancer1970.4%
Hormone-dependent prostate cancer1220.3%
Occupational exposure to product920.2%

The indication field is filled in by the reporter and is often blank; shares are of all 44,385 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Eligard reports
Device2,1934.9%
Xtandi8501.9%
Bicalutamide6641.5%
Enzalutamide6251.4%
Aspirin4381%
Casodex3600.8%
Leuprolide acetate3340.8%
Prednisone3010.7%
Docetaxel2780.6%
Atorvastatin2530.6%

Other products listed in reports where Eligard is a suspect product, whatever their own role. Co-listing means the two were recorded together; it says nothing about either product's part in the event. Only the 2,500 most-reported names are counted here.

In context

MeasureEligardGonadotropin releasing hormone receptor agonistAll reports
Reports as suspect product44,38561,40920,646,523
Share of that pool—72.3%0.2%
Reports, latest 12 months2,388—1,332,454
Marked serious38.1%50.5%57.4%
Death recorded among outcomes, per 1,000 reports17317791
Hospitalisation recorded, per 1,000 reports102151213
Consumer-filed share56%47.9%45.8%
Top term, share of reportsIntercepted product preparation error 20.3%median 0%0.1%

Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Other drugs in the gonadotropin releasing hormone receptor agonist class

DrugName typeReportsLatest 12 monthsMarked serious
Zoladexbrand7,05839688.5%
Leuprolide acetategeneric4,95170290.1%
Goserelingeneric2,78938395.9%
Supprelinbrand8151218%
Fensolvibrand7481144.4%
Leuprolidegeneric66310679%

Ordered by report count for navigation only. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic." A brand and its generic are separate rows because reporters name them separately.

Questions about Eligard reports

How many adverse event reports has FDA received for Eligard?

44,385 reports list Eligard as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 2,388 of them arrived in the latest 12 months. Another 2,126 list it only as a concomitant medication.

What reactions are recorded in Eligard reports?

intercepted product preparation error (20.3%), syringe issue (17.4%), device leakage (13.7%), death (13.6%) and hot flush (13.4%). These are MedDRA preferred terms coded from what the reporter described; a report can list several, and a term's presence is not a finding that Eligard was responsible.

How serious are the reports?

38.1% are marked serious by the reporter. Among the outcomes recorded, 17.3% of reports include death and 10.2% include hospitalisation. FDA has not verified these outcomes and states that the reports "cannot be used to estimate the incidence" of the events.

Who files these reports?

consumer or non-health professional (56%), other health professional (25.6%) and pharmacist (10.4%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Eligard rising?

2,388 reports in the 12 months to June 2026, down 68% from 7,398 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Counts also move with how many people take a product, its time on the market and publicity.

Do these reports show that Eligard was responsible for these reactions?

No. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event." The reaction may relate to the condition being treated, to other medicines, or to something else.

Is this a list of the side effects of Eligard?

No. It is a count of what was reported to FDA. The adverse reactions observed in clinical studies are printed on the FDA-approved label, which a pharmacist or clinician can go through with you.

How do I report an adverse event?

Consumers and health professionals can report to FDA through MedWatch (Form FDA 3500 online, or 1-800-FDA-1088), or to the manufacturer, which must pass reports on. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. A report counts here when it lists Eligard as a suspect or interacting product; reports listing it only as a concomitant medication (2,126) are excluded. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.