Drug interactions
Ethosuximide + Fexinidazole
Severity: Moderate
Ethosuximide and Fexinidazole: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Fexinidazole inhibits CYP3A4 and may raise ethosuximide concentrations. This could increase dose-related adverse effects such as drowsiness, nausea and ataxia.
What this interaction means in plain words
Ethosuximide and Fexinidazole can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Fexinidazole inhibits CYP3A4, reducing ethosuximide clearance.
What to do
Monitor for signs of ethosuximide toxicity during the short fexinidazole course. Consider checking serum ethosuximide levels and reducing the dose if needed.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Ethosuximide
- Benzhydrocodone / acetaminophen + Ethosuximide Major
- Buprenorphine long-acting + Ethosuximide Major
- Buprenorphine subdermal implant + Ethosuximide Major
- Buprenorphine transdermal + Ethosuximide Major
- Calcium / magnesium / potassium / sodium oxybates + Ethosuximide Major
- Ethosuximide + Fentanyl intranasal Major
Frequently asked questions
Can I take Ethosuximide with Fexinidazole?
MediHelp rates the interaction as moderate. Ethosuximide and Fexinidazole can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Fexinidazole inhibits CYP3A4 and may raise ethosuximide concentrations. This could increase dose-related adverse effects such as drowsiness, nausea and ataxia.
How serious is the interaction between Ethosuximide and Fexinidazole?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for signs of ethosuximide toxicity during the short fexinidazole course. Consider checking serum ethosuximide levels and reducing the dose if needed.
What other medicines interact with Ethosuximide?
MediHelp also lists interactions of Ethosuximide with, for example, Benzhydrocodone / acetaminophen, Buprenorphine long-acting, Buprenorphine subdermal implant. The full list is on the Ethosuximide page.
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