Drug interactions
Fluoxetine + Netupitant / palonosetron
Severity: Moderate
Fluoxetine and Netupitant / palonosetron: 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
5-HT3 antagonists such as palonosetron have been associated with serotonin syndrome when given with serotonergic drugs, though the risk is low. Netupitant is also a moderate CYP3A4 inhibitor, which may modestly raise levels of some co-administered drugs.
What this interaction means in plain words
Fluoxetine and Netupitant / palonosetron 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 additive serotonergic effects; netupitant inhibits CYP3A4.
What to do
The combination can usually be used for chemotherapy-induced nausea with monitoring. Watch for agitation, tremor, diarrhea and hyperthermia and stop treatment if serotonin syndrome is suspected.
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 Fluoxetine
- Fluoxetine + Isocarboxazid Contraindicated
- Fluoxetine + Mavacamten Contraindicated
- Fluoxetine + Methylene blue Contraindicated
- Fluoxetine + Phenelzine Contraindicated
- Fluoxetine + Pimozide Contraindicated
- Fluoxetine + Rasagiline Contraindicated
Frequently asked questions
Can I take Fluoxetine with Netupitant / palonosetron?
MediHelp rates the interaction as moderate. Fluoxetine and Netupitant / palonosetron 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. 5-HT3 antagonists such as palonosetron have been associated with serotonin syndrome when given with serotonergic drugs, though the risk is low. Netupitant is also a moderate CYP3A4 inhibitor, which may modestly raise levels of some co-administered drugs.
How serious is the interaction between Fluoxetine and Netupitant / palonosetron?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: The combination can usually be used for chemotherapy-induced nausea with monitoring. Watch for agitation, tremor, diarrhea and hyperthermia and stop treatment if serotonin syndrome is suspected.
What other medicines interact with Fluoxetine?
MediHelp also lists interactions of Fluoxetine with, for example, Isocarboxazid, Mavacamten, Methylene blue. The full list is on the Fluoxetine page.
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