Drug interactions
Risperidone + Tropisetron
Severity: Moderate
Risperidone and Tropisetron: 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
Both agents can prolong the QT interval, so combined use may increase the risk of torsades de pointes, especially with electrolyte abnormalities or cardiac disease.
What this interaction means in plain words
Risperidone and Tropisetron 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 prolongation of cardiac repolarization.
What to do
Correct hypokalemia and hypomagnesemia and obtain an ECG in at-risk patients; consider a non-QT-prolonging antiemetic if QTc is prolonged.
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 Risperidone
- Ibutilide + Risperidone Contraindicated
- Risperidone + Vandetanib Contraindicated
- Adagrasib + Risperidone Major
- Amiodarone + Risperidone Major
- Amisulpride + Risperidone Major
- Amoxapine + Risperidone Major
Frequently asked questions
Can I take Risperidone with Tropisetron?
MediHelp rates the interaction as moderate. Risperidone and Tropisetron 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. Both agents can prolong the QT interval, so combined use may increase the risk of torsades de pointes, especially with electrolyte abnormalities or cardiac disease.
How serious is the interaction between Risperidone and Tropisetron?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Correct hypokalemia and hypomagnesemia and obtain an ECG in at-risk patients; consider a non-QT-prolonging antiemetic if QTc is prolonged.
What other medicines interact with Risperidone?
MediHelp also lists interactions of Risperidone with, for example, Ibutilide, Vandetanib, Adagrasib. The full list is on the Risperidone page.
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