OpenClaim

Ozanimod Side Effects

The most commonly reported side effects of ozanimod include fatigue, multiple sclerosis relapse, and headache, based on 8,194 FDA adverse event reports from 2015 to 2025. 6.7% of reports found the drug to be ineffective.

Ozanimod side effects

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

1
Fatigue9.0%734
2
Multiple Sclerosis Relapse7.1%580
3
Drug Ineffective6.7%546
4
Headache6.2%506
5
Product Dose Omission Issue4.2%341
6
Dizziness4.1%335
7
Nausea3.4%281
8
Diarrhoea3.2%261
9
Colitis Ulcerative3.1%258
10
Pain2.9%241
11
Back Pain2.6%209
12
Adverse Event2.2%184
13
Multiple Sclerosis2.1%176
14
Fall2.1%175
15
Covid-192.0%167

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

Report severity

28.9%Serious2,365 reports
9.1%Hospitalizations742 reports
1.2%Fatal98 reports

Seriousness is determined by the reporter, not by OpenClaim.

Ozanimod drug interactions

Other drugs that appear in adverse event reports alongside ozanimod. 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
Mesalamine0.4%29
2
Prednisone0.3%27
3
Ocrelizumab0.3%26
4
Vedolizumab0.3%26
5
Upadacitinib0.3%23
6
Tofacitinib0.3%21
7
Adalimumab0.2%20
8
Ustekinumab0.2%18
9
Rituximab0.2%17
10
Dimethyl0.2%16
11
Infliximab0.2%16
12
Azathioprine0.2%14
13
Teriflunomide0.2%13
14
Glatiramer-acetate0.2%13
15
Ofatumumab0.2%13

Taken alongside

1
Ergocalciferol3.3%269
2
Gabapentin1.7%143
3
Prednisone1.6%129
4
Levothyroxine-sodium1.5%121
5
Baclofen1.4%117
6
Acetaminophen1.3%108
7
Mesalamine1.3%107
8
Omeprazole1.1%90
9
Cyanocobalamin1.1%87
10
Dalfampridine0.9%76
11
Atorvastatin-calcium0.9%76
12
Ibuprofen0.9%74
13
Aspirin0.8%68
14
Escitalopram-oxalate0.8%66
15
Pantoprazole-sodium0.8%64

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 ozanimod side effects

67.3% of ozanimod adverse event reports involve female patients and 27.8% involve male patients. The largest age group is adult at 85%. These figures reflect who reports side effects, not underlying risk.

Sex

Female67.3%
Male27.8%
Unknown4.9%

Age group

< 20.1%
2–110.0%
12–170.1%
18–6485.1%
65+14.7%

What is ozanimod used for

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

Abnormal FaecesAcute Disseminated EncephalomyelitisArthritis EnteropathicB-cell Depletion TherapyBreast CancerBreast Cancer FemaleBronchiectasisClinically Isolated SyndromeColitisColitis UlcerativeCrohn^s DiseaseCervical RadiculopathyCleft PalateClinically Isolated SyndromeColitis

Showing 15 of 87 indications

Ozanimod brand names and reporting trend

Ozanimod is sold under brand names including Ozanimod, Zeposia.

Brand names

Ozanimod716
Zeposia1

Quarterly reports (20152025)

201520242025

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

Taking ozanimod with another medication?

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