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Oxcarbazepine Side Effects

The most commonly reported side effects of oxcarbazepine include seizure, off label use, and fatigue, based on 32,070 FDA adverse event reports from 2004 to 2025. 8.1% of reports found the drug to be ineffective.

Oxcarbazepine side effects

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

1
Seizure8.9%2,848
2
Drug Ineffective8.1%2,603
3
Off Label Use4.9%1,583
4
Fatigue4.2%1,340
5
Headache3.5%1,127
6
Dizziness3.5%1,126
7
Somnolence3.4%1,090
8
Convulsion3.2%1,031
9
Fall3.0%951
10
Nausea2.9%943
11
Hyponatraemia2.6%848
12
Vomiting2.5%802
13
Anxiety2.4%783
14
Epilepsy2.4%772
15
Rash2.4%754

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

Report severity

75.8%Serious24,295 reports
30.6%Hospitalizations9,809 reports
6.7%Fatal2,164 reports

Seriousness is determined by the reporter, not by OpenClaim.

Oxcarbazepine drug interactions

Other drugs that appear in adverse event reports alongside oxcarbazepine. 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
Levetiracetam11.6%3,720
2
Lamotrigine6.2%1,991
3
Lacosamide5.5%1,748
4
Topiramate4.8%1,552
5
Carbamazepine4.2%1,349
6
Quetiapine-fumarate3.9%1,252
7
Clobazam3.2%1,028
8
Valproic-acid3.2%1,015
9
Gabapentin2.8%913
10
Phenytoin2.6%820
11
Clonazepam2.4%770
12
Pregabalin2.3%751
13
Aripiprazole2.2%690
14
Vigabatrin2.0%648
15
Sodium-oxybate2.0%635

Taken alongside

1
Gabapentin7.2%2,323
2
Clonazepam7.0%2,242
3
Acetaminophen6.9%2,221
4
Ergocalciferol6.4%2,041
5
Levothyroxine-sodium6.2%1,981
6
Levetiracetam6.1%1,952
7
Lamotrigine5.6%1,797
8
Topiramate5.1%1,628
9
Omeprazole5.0%1,588
10
Aspirin4.9%1,579
11
Albuterol4.6%1,463
12
Lorazepam4.4%1,403
13
Baclofen3.8%1,204
14
Atorvastatin-calcium3.7%1,190
15
Trazodone-hydrochloride3.6%1,146

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 oxcarbazepine side effects

53.5% of oxcarbazepine adverse event reports involve female patients and 37.3% involve male patients. The largest age group is adult at 64%. These figures reflect who reports side effects, not underlying risk.

Sex

Female53.5%
Male37.3%
Unknown9.2%

Age group

< 23.1%
2–1111.5%
12–177.6%
18–6463.8%
65+14.0%

What is oxcarbazepine used for

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

Abdominal PainAbdominal Pain UpperAbnormal BehaviourAccidental ExposureAccidental Exposure To ProductAccidental OverdoseAcute PsychosisAddison^s DiseaseAdjustment DisorderAdjustment Disorder With Disturbance Of ConductAffect LabilityAffective DisorderAggressionAgitationAkathisia

Showing 15 of 786 indications

Oxcarbazepine brand names and reporting trend

Oxcarbazepine is sold under the brand name Oxtellar Xr.

Brand names

Oxtellar Xr17,637

Quarterly reports (20042025)

20052010201520202025

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

Taking oxcarbazepine with another medication?

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