Drug interactions
Cenobamate + Ondansetron
Severity: Minor
Cenobamate and Ondansetron: minor 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, which contributes to ondansetron metabolism, so ondansetron exposure may fall. This could reduce antiemetic effectiveness.
What this interaction means in plain words
Cenobamate and Ondansetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Cenobamate belongs to Central Nervous System; Ondansetron belongs to Gastrointestinal Tract.
Why it happens
CYP3A4 induction by cenobamate increases ondansetron clearance.
What to do
Monitor for reduced antiemetic response and increase the ondansetron dose within labeled limits if needed.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Ondansetron
- Apomorphine + Ondansetron Contraindicated
- Ondansetron + Thioridazine Contraindicated
- Ondansetron + Vandetanib Contraindicated
- Adagrasib + Ondansetron Major
- Amiodarone + Ondansetron Major
- Amisulpride + Ondansetron Major
Other interactions of Cenobamate
Frequently asked questions
Can I take Cenobamate with Ondansetron?
MediHelp rates the interaction as minor. Cenobamate and Ondansetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Cenobamate induces CYP3A4, which contributes to ondansetron metabolism, so ondansetron exposure may fall. This could reduce antiemetic effectiveness.
How serious is the interaction between Cenobamate and Ondansetron?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for reduced antiemetic response and increase the ondansetron dose within labeled limits if needed.
What other medicines interact with Ondansetron?
MediHelp also lists interactions of Ondansetron with, for example, Apomorphine, Thioridazine, Vandetanib. The full list is on the Ondansetron page.
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