Drug interactions
Cenobamate + Ethosuximide
Severity: Moderate
Cenobamate and Ethosuximide: 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
Cenobamate induces CYP3A4 and may lower ethosuximide levels, risking loss of seizure control. Both drugs are also sedating, so additive drowsiness and dizziness can occur.
What this interaction means in plain words
Cenobamate and Ethosuximide 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.
Cenobamate belongs to Central Nervous System; Ethosuximide belongs to Central Nervous System.
Why it happens
CYP3A4 induction by cenobamate increases ethosuximide clearance, together with additive CNS depression.
What to do
Monitor seizure control and consider measuring ethosuximide levels, increasing the dose if needed. Watch for sedation and ataxia.
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
Other interactions of Cenobamate
Frequently asked questions
Can I take Cenobamate with Ethosuximide?
MediHelp rates the interaction as moderate. Cenobamate and Ethosuximide 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. Cenobamate induces CYP3A4 and may lower ethosuximide levels, risking loss of seizure control. Both drugs are also sedating, so additive drowsiness and dizziness can occur.
How serious is the interaction between Cenobamate and Ethosuximide?
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 seizure control and consider measuring ethosuximide levels, increasing the dose if needed. Watch for sedation and ataxia.
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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