Drug interactions
Cariprazine + Ethotoin
Severity: Moderate
Cariprazine and Ethotoin: 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 that can cause drowsiness and dizziness, which may be added to the sedation from cariprazine. Antipsychotics may also lower the seizure threshold, which can work against seizure control. Ethotoin is less potent as an enzyme inducer than phenytoin but could still reduce cariprazine exposure.
What this interaction means in plain words
Cariprazine and Ethotoin 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
Additive CNS depression, with possible pharmacodynamic opposition of anticonvulsant effect and possible CYP3A4 induction.
What to do
Monitor for sedation, seizure frequency and psychiatric response, and adjust doses as needed. Advise caution with driving until the response is known.
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 Cariprazine
Frequently asked questions
Can I take Cariprazine with Ethotoin?
MediHelp rates the interaction as moderate. Cariprazine and Ethotoin 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 that can cause drowsiness and dizziness, which may be added to the sedation from cariprazine. Antipsychotics may also lower the seizure threshold, which can work against seizure control. Ethotoin is less potent as an enzyme inducer than phenytoin but could still reduce cariprazine exposure.
How serious is the interaction between Cariprazine and Ethotoin?
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 sedation, seizure frequency and psychiatric response, and adjust doses as needed. Advise caution with driving until the response is known.
What other medicines interact with Cariprazine?
MediHelp also lists interactions of Cariprazine with, for example, Alfentanil, Amisulpride, Amobarbital. The full list is on the Cariprazine page.
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