Drug interactions
Ethotoin + Vinblastine
Severity: Moderate
Ethotoin and Vinblastine: 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
Cytotoxic chemotherapy regimens that include vinca alkaloids have been associated with reduced phenytoin-type anticonvulsant levels, risking loss of seizure control. Ethotoin is a hydantoin and the interaction is extrapolated from phenytoin data.
What this interaction means in plain words
Ethotoin and Vinblastine 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
Possible reduced absorption of the hydantoin with chemotherapy and altered metabolism; the mechanism is not firmly established.
What to do
Monitor seizure control and anticonvulsant levels if available during chemotherapy, and adjust the ethotoin dose as 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 Vinblastine
Frequently asked questions
Can I take Ethotoin with Vinblastine?
MediHelp rates the interaction as moderate. Ethotoin and Vinblastine 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. Cytotoxic chemotherapy regimens that include vinca alkaloids have been associated with reduced phenytoin-type anticonvulsant levels, risking loss of seizure control. Ethotoin is a hydantoin and the interaction is extrapolated from phenytoin data.
How serious is the interaction between Ethotoin and Vinblastine?
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 anticonvulsant levels if available during chemotherapy, and adjust the ethotoin dose as needed.
What other medicines interact with Vinblastine?
MediHelp also lists interactions of Vinblastine with, for example, Adenovirus types 4 and 7 live, Apalutamide, Atazanavir. The full list is on the Vinblastine page.
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