Drug interactions
Amitriptyline + Palonosetron
Severity: Moderate
Amitriptyline and 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
Serotonin syndrome has been reported rarely when 5-HT3 antagonists are combined with serotonergic antidepressants. Both agents can also have QT effects, though palonosetron has little effect at standard doses.
What this interaction means in plain words
Amitriptyline and 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.
Amitriptyline belongs to Central Nervous System; Palonosetron belongs to Gastrointestinal Tract.
Why it happens
Possible additive serotonergic effects; causality is not firmly established.
What to do
Use together when clinically needed and monitor for serotonin toxicity signs, especially after dose changes. Stop the agents and give supportive care if it occurs.
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
- Amoxapine + Palonosetron Moderate
Other interactions of Amitriptyline
- Amitriptyline + Isocarboxazid Contraindicated
- Amitriptyline + Methylene blue Contraindicated
- Amitriptyline + Phenelzine Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amitriptyline + Procarbazine Contraindicated
- Amitriptyline + Safinamide Contraindicated
Frequently asked questions
Can I take Amitriptyline with Palonosetron?
MediHelp rates the interaction as moderate. Amitriptyline and 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. Serotonin syndrome has been reported rarely when 5-HT3 antagonists are combined with serotonergic antidepressants. Both agents can also have QT effects, though palonosetron has little effect at standard doses.
How serious is the interaction between Amitriptyline and 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: Use together when clinically needed and monitor for serotonin toxicity signs, especially after dose changes. Stop the agents and give supportive care if it occurs.
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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