Drug interactions
Ethotoin + Topiramate
Severity: Moderate
Ethotoin and Topiramate: 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
Ethotoin is a hydantoin anticonvulsant. Hydantoins such as phenytoin can lower topiramate levels through enzyme induction, and topiramate may alter hydantoin levels, so seizure control may shift when either drug is changed.
What this interaction means in plain words
Ethotoin and Topiramate 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
Enzyme induction by the hydantoin may increase topiramate clearance; the effect of topiramate on ethotoin is not well characterized.
What to do
Monitor seizure control and tolerability when starting or stopping either drug, and adjust topiramate dose to response.
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 Topiramate
Frequently asked questions
Can I take Ethotoin with Topiramate?
MediHelp rates the interaction as moderate. Ethotoin and Topiramate 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. Ethotoin is a hydantoin anticonvulsant. Hydantoins such as phenytoin can lower topiramate levels through enzyme induction, and topiramate may alter hydantoin levels, so seizure control may shift when either drug is changed.
How serious is the interaction between Ethotoin and Topiramate?
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 tolerability when starting or stopping either drug, and adjust topiramate dose to response.
What other medicines interact with Topiramate?
MediHelp also lists interactions of Topiramate with, for example, Benzhydrocodone / acetaminophen, Buprenorphine long-acting, Buprenorphine subdermal implant. The full list is on the Topiramate page.
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