Drug interactions
Netupitant-palonosetron + Protriptyline
Severity: Moderate
Netupitant-palonosetron and Protriptyline: 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
Palonosetron has been rarely associated with serotonin syndrome when given with serotonergic drugs such as tricyclic antidepressants. Protriptyline has weaker serotonergic activity than many tricyclics, so the risk is low but potentially serious.
What this interaction means in plain words
Netupitant-palonosetron and Protriptyline 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 effect; the mechanism with 5-HT3 antagonists is not well established.
What to do
Monitor for agitation, tremor, hyperreflexia, sweating and fever. Stop the serotonergic drugs and provide supportive care 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 Netupitant-palonosetron
- Apomorphine + Netupitant-palonosetron Contraindicated
- Flibanserin + Netupitant-palonosetron Contraindicated
- Apalutamide + Netupitant-palonosetron Major
- Avapritinib + Netupitant-palonosetron Major
- Carbamazepine + Netupitant-palonosetron Major
- Cobimetinib + Netupitant-palonosetron Major
Frequently asked questions
Can I take Netupitant-palonosetron with Protriptyline?
MediHelp rates the interaction as moderate. Netupitant-palonosetron and Protriptyline 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. Palonosetron has been rarely associated with serotonin syndrome when given with serotonergic drugs such as tricyclic antidepressants. Protriptyline has weaker serotonergic activity than many tricyclics, so the risk is low but potentially serious.
How serious is the interaction between Netupitant-palonosetron and Protriptyline?
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 agitation, tremor, hyperreflexia, sweating and fever. Stop the serotonergic drugs and provide supportive care if serotonin syndrome is suspected.
What other medicines interact with Netupitant-palonosetron?
MediHelp also lists interactions of Netupitant-palonosetron with, for example, Apomorphine, Flibanserin, Apalutamide. The full list is on the Netupitant-palonosetron page.
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