Drug interactions
Doxepin + Palonosetron
Severity: Minor
Doxepin and Palonosetron: minor 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
Doxepin is a tricyclic with serotonin reuptake effects, and 5-HT3 antagonists have rarely been associated with serotonin syndrome when given with serotonergic drugs. The risk is low, particularly with low-dose doxepin for insomnia.
What this interaction means in plain words
Doxepin and Palonosetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Doxepin belongs to Dermatology; Palonosetron belongs to Gastrointestinal Tract.
Why it happens
Possible additive serotonergic effect; not well established.
What to do
No routine change is needed; advise the patient to report agitation, tremor, sweating or fever. Stop treatment if serotonin syndrome is suspected.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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
Other interactions of Doxepin
- Doxepin + Isocarboxazid Contraindicated
- Doxepin + Phenelzine Contraindicated
- Doxepin + Procarbazine Contraindicated
- Doxepin + Safinamide Contraindicated
- Doxepin + Selegiline Contraindicated
- Doxepin + Tranylcypromine Contraindicated
Frequently asked questions
Can I take Doxepin with Palonosetron?
MediHelp rates the interaction as minor. Doxepin and Palonosetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Doxepin is a tricyclic with serotonin reuptake effects, and 5-HT3 antagonists have rarely been associated with serotonin syndrome when given with serotonergic drugs. The risk is low, particularly with low-dose doxepin for insomnia.
How serious is the interaction between Doxepin and Palonosetron?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine change is needed; advise the patient to report agitation, tremor, sweating or fever. Stop treatment if serotonin syndrome is suspected.
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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