OpenClaim

Segesterone Side Effects

The most commonly reported side effects of segesterone include intermenstrual bleeding, nausea, and off label use, based on 353 FDA adverse event reports from 2019 to 2025. 7.1% of reports found the drug to be ineffective.

Segesterone side effects

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

1
Intermenstrual Bleeding11.3%40
2
Nausea9.6%34
3
Off Label Use9.6%34
4
Vaginal Haemorrhage9.3%33
5
Drug Ineffective7.1%25
6
Headache5.9%21
7
Vaginal Discharge4.8%17
8
Vomiting4.8%17
9
Device Expulsion4.0%14
10
Pulmonary Embolism3.7%13
11
Metrorrhagia3.4%12
12
Depression3.4%12
13
Migraine3.4%12
14
Menstrual Disorder3.1%11
15
Abdominal Pain3.1%11

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

Report severity

20.1%Serious71 reports
7.9%Hospitalizations28 reports
0.3%Fatal1 reports

Seriousness is determined by the reporter, not by OpenClaim.

Segesterone drug interactions

Other drugs that appear in adverse event reports alongside segesterone. 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
Ethinyl-estradiol94.1%332
2
Etonogestrel2.3%8
3
Amoxicillin0.6%2
4
Nirmatrelvir0.6%2
5
Ritonavir0.6%2
6
Calcium-oxybate0.6%2
7
Magnesium-oxybate0.6%2
8
Potassium-oxybate0.6%2
9
Sodium-oxybate0.6%2
10
Ixekizumab0.6%2
11
Apremilast0.3%1
12
Miconazole0.3%1
13
Estradiol0.3%1
14
Tolvaptan0.3%1
15
Levonorgestrel0.3%1

Taken alongside

1
Ethinyl-estradiol5.9%21
2
Cetirizine-hydrochloride2.8%10
3
Ergocalciferol2.8%10
4
Fish2.3%8
5
Amphetamine2.0%7
6
Dextroamphetamine2.0%7
7
Fexofenadine-hydrochloride2.0%7
8
Spironolactone1.7%6
9
Albuterol1.7%6
10
Omeprazole1.7%6
11
Cyanocobalamin1.7%6
12
Escitalopram-oxalate1.4%5
13
Fluticasone1.4%5
14
Umeclidinium-bromide1.4%5
15
Vilanterol-trifenatate1.4%5

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 segesterone side effects

87.5% of segesterone adverse event reports involve female patients and 0.8% involve male patients. The largest age group is adult at 97%. These figures reflect who reports side effects, not underlying risk.

Sex

Female87.5%
Male0.8%
Unknown11.6%

Age group

< 20.0%
2–110.0%
12–173.3%
18–6496.7%
65+0.0%

What is segesterone used for

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

AdenomyosisAmenorrhoeaContraceptionContraceptionDysmenorrhoeaDysmenorrhoeaEndometriosisGeneralised Tonic-clonic SeizureHeavy Menstrual BleedingHormone Replacement TherapyHormone TherapyHeavy Menstrual BleedingHormone Level AbnormalHormone Replacement TherapyHot Flush

Showing 15 of 36 indications

Segesterone brand names and reporting trend

Segesterone is sold under the brand name Annovera.

Brand names

Annovera1

Quarterly reports (20192025)

2020202220242025

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

Taking segesterone with another medication?

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