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Ganirelix Side Effects

The most commonly reported side effects of ganirelix include ovarian hyperstimulation syndrome, no adverse event, and headache, based on 1,850 FDA adverse event reports from 2004 to 2025. 4.7% of reports found the drug to be ineffective.

Ganirelix side effects

Percentages show how often each reaction appears relative to total reports for ganirelix.

1
Ovarian Hyperstimulation Syndrome18.3%339
2
No Adverse Event5.6%104
3
Headache5.4%99
4
Needle Issue5.0%92
5
Drug Ineffective4.7%87
6
Product Storage Error4.6%86
7
Inappropriate Schedule Of Drug Administration4.5%84
8
Injection Site Pain4.4%82
9
Ascites4.4%81
10
Product Quality Issue4.3%79
11
Nausea4.0%74
12
Abdominal Distension3.9%72
13
Fatigue2.8%51
14
Injection Site Erythema2.5%47
15
Dyspnoea2.4%45

These are voluntary reports and do not establish that ganirelix caused these reactions.

Report severity

34.1%Serious631 reports
23.2%Hospitalizations430 reports
0.3%Fatal5 reports

Seriousness is determined by the reporter, not by OpenClaim.

Ganirelix drug interactions

Other drugs that appear in adverse event reports alongside ganirelix. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Follitropin-alfa-beta37.3%690
2
Gonadotropin-chorionic11.6%214
3
Choriogonadotropin-alfa10.4%193
4
Progesterone9.2%171
5
Menotropins-fsh9.2%170
6
Estradiol3.4%62
7
Leuprolide2.2%40
8
Triptorelin-pamoate1.9%36
9
Letrozole1.8%34
10
Cetrorelix-acetate0.9%17
11
Enoxaparin-sodium0.9%17
12
Aspirin0.8%14
13
Sterile0.6%11
14
Carbamazepine0.5%10
15
Dupilumab0.5%10

Taken alongside

1
Menotropins-fsh28.4%526
2
Progesterone15.0%278
3
Follitropin-alfa-beta12.9%238
4
Leuprolide11.7%217
5
Estradiol11.5%212
6
Azithromycin7.2%133
7
Doxycycline6.6%123
8
Gonadotropin-chorionic5.7%106
9
Choriogonadotropin-alfa5.4%100
10
Ethinyl-estradiol4.4%81
11
Levothyroxine-sodium4.3%80
12
Letrozole3.4%63
13
Methylprednisolone3.2%60
14
Aspirin2.9%53
15
Ergocalciferol2.8%51

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports ganirelix side effects

93.2% of ganirelix adverse event reports involve female patients and 0.3% involve male patients. The largest age group is adult at 99%. These figures reflect who reports side effects, not underlying risk.

Sex

Female93.2%
Male0.3%
Unknown6.5%

Age group

< 21.0%
2–110.0%
12–170.0%
18–6498.7%
65+0.2%

What is ganirelix used for

Conditions and purposes for which patients were taking ganirelix when the adverse event was reported.

Anovulatory CycleAssisted FertilisationAssisted Reproductive TechnologyAdverse Drug ReactionAntioestrogen TherapyAssisted FertilisationAssisted Reproductive TechnologyBlood Gonadotrophin AbnormalBlood Luteinising HormoneBlood Luteinising Hormone AbnormalBlood Luteinising Hormone IncreasedBreast Cancer FemaleBlood Follicle Stimulating Hormone IncreasedControlled Ovarian StimulationControlled Ovarian Stimulation

Showing 15 of 55 indications

Ganirelix brand names and reporting trend

Ganirelix is sold under the brand name Ganirelix Acetate.

Brand names

Ganirelix Acetate1,913

Quarterly reports (20042025)

2005201520202025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking ganirelix with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.