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Estradiol Side Effects

The most commonly reported side effects of estradiol include off label use, product adhesion issue, and headache, based on 101,534 FDA adverse event reports from 2004 to 2025. 7.8% of reports found the drug to be ineffective.

Estradiol side effects

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

1
Drug Ineffective7.8%7,955
2
Off Label Use6.6%6,683
3
Product Adhesion Issue6.6%6,655
4
Headache5.0%5,113
5
Nausea4.4%4,457
6
Fatigue4.3%4,401
7
Hot Flush3.5%3,583
8
Pain3.3%3,312
9
Wrong Technique In Product Usage Process2.9%2,940
10
Diarrhoea2.9%2,930
11
Product Quality Issue2.7%2,785
12
Dizziness2.7%2,694
13
Arthralgia2.6%2,688
14
Breast Cancer Female2.6%2,644
15
No Adverse Event2.6%2,591

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

Report severity

43.4%Serious44,044 reports
13.3%Hospitalizations13,487 reports
1.8%Fatal1,865 reports

Seriousness is determined by the reporter, not by OpenClaim.

Estradiol drug interactions

Other drugs that appear in adverse event reports alongside estradiol. 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
Norethindrone6.1%6,159
2
Estrogens4.6%4,704
3
Medroxyprogesterone-acetate4.5%4,572
4
Adalimumab3.0%3,060
5
Progesterone2.9%2,909
6
Sodium-oxybate2.4%2,458
7
Levonorgestrel2.1%2,163
8
Etanercept1.6%1,666
9
Dupilumab1.6%1,626
10
Relugolix1.4%1,437
11
Lenalidomide1.2%1,190
12
Pregabalin1.0%1,058
13
Methotrexate1.0%991
14
Apremilast0.9%892
15
Tofacitinib0.8%851

Taken alongside

1
Levothyroxine-sodium13.3%13,548
2
Ergocalciferol11.8%11,973
3
Acetaminophen10.3%10,457
4
Omeprazole7.4%7,507
5
Aspirin7.3%7,450
6
Progesterone7.2%7,290
7
Gabapentin6.4%6,509
8
Albuterol6.4%6,493
9
Fluticasone5.9%6,039
10
Calcium5.6%5,682
11
Atorvastatin-calcium5.2%5,263
12
Prednisone4.8%4,883
13
Pantoprazole-sodium4.3%4,366
14
Hydrochlorothiazide4.3%4,325
15
Furosemide4.2%4,296

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 estradiol side effects

90.2% of estradiol adverse event reports involve female patients and 1.8% involve male patients. The largest age group is adult at 69%. These figures reflect who reports side effects, not underlying risk.

Sex

Female90.2%
Male1.8%
Unknown8.0%

Age group

< 20.3%
2–110.3%
12–170.7%
18–6469.1%
65+29.5%

What is estradiol used for

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

Abdominal DiscomfortAbdominal DistensionAbdominal HysterectomyAbdominal PainAbdominal Pain UpperAbnormal DreamsAbortion SpontaneousAccidental ExposureAccidental Exposure To ProductAccidental Exposure To Product By ChildAcid Base Balance AbnormalAcneActivities Of Daily Living ImpairedAcute Disseminated EncephalomyelitisAcute Graft Versus Host Disease

Showing 15 of 1,378 indications

Estradiol brand names and reporting trend

Estradiol is sold under several brand names including Estradiol And Norgestimate, Ditate-ds, Estrasorb.

Brand names

Estradiol And Norgestimate57,219
Ditate-ds751
Estrasorb628
Testosterone Cypionate-estradiol Cypionate95
Femtrace24

Quarterly reports (20042025)

20052010201520202025

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

Taking estradiol with another medication?

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