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Ursodiol Side Effects

The most commonly reported side effects of ursodiol include off label use, pruritus, and fatigue, based on 22,036 FDA adverse event reports from 2004 to 2025. 3.9% of reports found the drug to be ineffective.

Ursodiol side effects

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

1
Off Label Use7.6%1,683
2
Pruritus5.7%1,255
3
Fatigue4.7%1,041
4
Diarrhoea4.5%991
5
Nausea4.2%921
6
Drug Ineffective3.9%865
7
Pyrexia3.4%746
8
Death3.1%692
9
Pneumonia3.0%668
10
Vomiting2.7%591
11
Headache2.6%564
12
Dyspnoea2.3%509
13
Abdominal Pain2.3%507
14
Asthenia2.1%453
15
Rash2.0%440

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

Report severity

80.0%Serious17,639 reports
46.1%Hospitalizations10,160 reports
13.9%Fatal3,063 reports

Seriousness is determined by the reporter, not by OpenClaim.

Ursodiol drug interactions

Other drugs that appear in adverse event reports alongside ursodiol. 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
Obeticholic-acid9.7%2,136
2
Ivacaftor5.1%1,120
3
Tacrolimus4.4%972
4
Cyclophosphamide3.7%825
5
Mycophenolate3.4%759
6
Fludarabine-phosphate2.9%633
7
Prednisone2.5%555
8
Ruxolitinib2.5%540
9
Busulfan2.4%539
10
Cyclosporine2.2%493
11
Methotrexate1.9%416
12
Rituximab1.9%410
13
Adalimumab1.8%398
14
Elexacaftor-ivacaftor-tezacaftor1.8%394
15
Sorafenib-tosylate1.7%384

Taken alongside

1
Ergocalciferol15.5%3,412
2
Acyclovir14.4%3,182
3
Omeprazole13.3%2,936
4
Furosemide12.9%2,834
5
Pantoprazole-sodium12.4%2,730
6
Acetaminophen11.9%2,627
7
Prednisone11.3%2,490
8
Albuterol10.7%2,362
9
Levothyroxine-sodium10.5%2,314
10
Ondansetron10.5%2,313
11
Amlodipine10.0%2,203
12
Aspirin8.5%1,879
13
Insulin8.5%1,866
14
Tacrolimus8.3%1,833
15
Lipase7.7%1,704

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 ursodiol side effects

50.1% of ursodiol adverse event reports involve female patients and 38.9% involve male patients. The largest age group is adult at 54%. These figures reflect who reports side effects, not underlying risk.

Sex

Female50.1%
Male38.9%
Unknown11.0%

Age group

< 22.9%
2–116.2%
12–175.1%
18–6454.3%
65+31.5%

What is ursodiol used for

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

Abdominal DiscomfortAbdominal PainAcute Lymphocytic LeukaemiaAdverse EventAlanine Aminotransferase IncreasedAlcoholic Liver DiseaseAmyloidosisAndrogen DeficiencyAngina PectorisAntiviral ProphylaxisAplastic AnaemiaArteriosclerosis ObliteransAscitesAspartate Aminotransferase IncreasedAst/alt Ratio Abnormal

Showing 15 of 582 indications

Ursodiol brand names and reporting trend

Ursodiol is sold under the brand name Urso Forte.

Brand names

Urso Forte20,024

Quarterly reports (20042025)

20052010201520202025

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

Taking ursodiol with another medication?

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