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Stiripentol Side Effects

The most commonly reported side effects of stiripentol include seizure, product use in unapproved indication, and off label use, based on 1,938 FDA adverse event reports from 2004 to 2025. 12.7% of reports found the drug to be ineffective.

Stiripentol side effects

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

1
Seizure38.3%743
2
Product Use In Unapproved Indication18.0%349
3
Off Label Use12.8%249
4
Drug Ineffective12.7%247
5
Decreased Appetite11.9%231
6
Somnolence10.8%209
7
Product Dose Omission Issue8.3%160
8
Product Preparation Issue7.1%138
9
Fatigue5.9%114
10
Pyrexia4.5%87
11
Weight Decreased4.5%87
12
Hospitalisation4.0%77
13
Epilepsy3.8%74
14
Diarrhoea3.6%69
15
Drug Interaction3.5%67

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

Report severity

83.5%Serious1,619 reports
34.1%Hospitalizations661 reports
5.2%Fatal100 reports

Seriousness is determined by the reporter, not by OpenClaim.

Stiripentol drug interactions

Other drugs that appear in adverse event reports alongside stiripentol. 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
Fenfluramine15.8%307
2
Clobazam11.8%228
3
Levetiracetam11.7%227
4
Valproic-acid9.6%187
5
Topiramate8.5%165
6
Cannabidiol6.6%128
7
Valproate-sodium5.6%109
8
Phenobarbital-sodium4.4%86
9
Zonisamide3.5%67
10
Lacosamide3.4%65
11
Clonazepam3.0%59
12
Perampanel2.8%54
13
Lamotrigine2.5%49
14
Carbamazepine2.5%48
15
Phenytoin2.4%46

Taken alongside

1
Clobazam55.4%1,073
2
Cannabidiol20.9%405
3
Divalproex-sodium16.4%318
4
Diazepam16.4%317
5
Levetiracetam15.3%297
6
Topiramate13.7%265
7
Clonazepam13.6%264
8
Levocarnitine12.3%239
9
Valproic-acid11.8%229
10
Midazolam11.2%218
11
Fenfluramine9.9%191
12
Valproate-sodium8.6%166
13
Ergocalciferol7.1%137
14
Zonisamide6.0%116
15
Phenobarbital-sodium5.7%111

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 stiripentol side effects

32.6% of stiripentol adverse event reports involve female patients and 31.4% involve male patients. The largest age group is child at 48%. These figures reflect who reports side effects, not underlying risk.

Sex

Female32.6%
Male31.4%
Unknown36.0%

Age group

< 29.3%
2–1147.9%
12–1716.0%
18–6426.5%
65+0.3%

What is stiripentol used for

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

Adverse EventAtonic SeizuresBrain NeoplasmConvulsionCortical DysplasiaCytogenetic AbnormalityDementiaDrug Use For Unknown IndicationDevelopmental DelayDisease SusceptibilityEncephalopathyEpilepsyEpileptic EncephalopathyEncephalopathyEpilepsy

Showing 15 of 58 indications

Stiripentol brand names and reporting trend

Stiripentol is sold under the brand name Diacomit.

Brand names

Diacomit707

Quarterly reports (20042025)

20042010201520202025

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

Taking stiripentol with another medication?

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