Drug interactions
Palonosetron + Selegiline transdermal
Severity: Moderate
Palonosetron and Selegiline transdermal: 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 5-HT3 antagonists and MAO inhibitors have been linked to serotonin syndrome, although the risk with palonosetron appears low. Selegiline raises monoamine levels, so adding a serotonergic agent could theoretically contribute to agitation, autonomic instability and neuromuscular hyperactivity.
What this interaction means in plain words
Palonosetron and Selegiline transdermal 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 serotonergic effect from MAO inhibition by selegiline plus 5-HT3 receptor antagonism, with a poorly defined contribution from palonosetron.
What to do
Palonosetron can usually be given for short-term antiemetic use while monitoring for signs of serotonin syndrome such as tremor, clonus, hyperthermia and agitation. Consider a non-serotonergic antiemetic if the patient has other serotonergic drugs on board.
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 Palonosetron
- Apomorphine + Palonosetron Contraindicated
- Isocarboxazid + Palonosetron Major
- Palonosetron + Phenelzine Major
- Palonosetron + Tranylcypromine Major
- Almotriptan + Palonosetron Moderate
- Amitriptyline + Palonosetron Moderate
Frequently asked questions
Can I take Palonosetron with Selegiline transdermal?
MediHelp rates the interaction as moderate. Palonosetron and Selegiline transdermal 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 5-HT3 antagonists and MAO inhibitors have been linked to serotonin syndrome, although the risk with palonosetron appears low. Selegiline raises monoamine levels, so adding a serotonergic agent could theoretically contribute to agitation, autonomic instability and neuromuscular hyperactivity.
How serious is the interaction between Palonosetron and Selegiline transdermal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Palonosetron can usually be given for short-term antiemetic use while monitoring for signs of serotonin syndrome such as tremor, clonus, hyperthermia and agitation. Consider a non-serotonergic antiemetic if the patient has other serotonergic drugs on board.
What other medicines interact with Palonosetron?
MediHelp also lists interactions of Palonosetron with, for example, Apomorphine, Isocarboxazid, Phenelzine. The full list is on the Palonosetron page.
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