Drug interactions
Paroxetine + Tropisetron
Severity: Moderate
Paroxetine 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
Tropisetron is metabolized by CYP2D6, so paroxetine can increase its levels. Both can also prolong QT, which may add arrhythmia risk in susceptible patients.
What this interaction means in plain words
Paroxetine 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
CYP2D6 inhibition by paroxetine plus additive QT prolongation.
What to do
Monitor ECG and electrolytes in patients with cardiac risk factors. Use the lowest effective tropisetron dose.
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 Paroxetine
- Isocarboxazid + Paroxetine Contraindicated
- Methylene blue + Paroxetine Contraindicated
- Paroxetine + Phenelzine Contraindicated
- Paroxetine + Pimozide Contraindicated
- Paroxetine + Procarbazine Contraindicated
- Paroxetine + Selegiline Contraindicated
Frequently asked questions
Can I take Paroxetine with Tropisetron?
MediHelp rates the interaction as moderate. Paroxetine 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. Tropisetron is metabolized by CYP2D6, so paroxetine can increase its levels. Both can also prolong QT, which may add arrhythmia risk in susceptible patients.
How serious is the interaction between Paroxetine 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: Monitor ECG and electrolytes in patients with cardiac risk factors. Use the lowest effective tropisetron dose.
What other medicines interact with Paroxetine?
MediHelp also lists interactions of Paroxetine with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Paroxetine page.
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