Drug interactions
Fenfluramine + Netupitant-palonosetron
Severity: Minor
Fenfluramine and Netupitant-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
Fenfluramine acts through serotonin release and receptor activation, and potent serotonin receptor antagonists could theoretically blunt its anticonvulsant effect. Palonosetron blocks 5-HT3 receptors, which are not considered the main mediators of fenfluramine's antiseizure action, so the relevance is uncertain.
What this interaction means in plain words
Fenfluramine and Netupitant-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.
Fenfluramine belongs to Central Nervous System; Netupitant-palonosetron belongs to Gastrointestinal Tract.
Why it happens
Theoretical pharmacodynamic antagonism at serotonin receptors; not well established for 5-HT3 blockade.
What to do
Monitor seizure frequency if antiemetic therapy is repeated or prolonged; no empiric change is needed.
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 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
Other interactions of Fenfluramine
- Fenfluramine + Isocarboxazid Contraindicated
- Fenfluramine + Linezolid Contraindicated
- Fenfluramine + Phenelzine Contraindicated
- Fenfluramine + Selegiline Contraindicated
- Fenfluramine + Tranylcypromine Contraindicated
- Almotriptan + Fenfluramine Major
Frequently asked questions
Can I take Fenfluramine with Netupitant-palonosetron?
MediHelp rates the interaction as minor. Fenfluramine and Netupitant-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. Fenfluramine acts through serotonin release and receptor activation, and potent serotonin receptor antagonists could theoretically blunt its anticonvulsant effect. Palonosetron blocks 5-HT3 receptors, which are not considered the main mediators of fenfluramine's antiseizure action, so the relevance is uncertain.
How serious is the interaction between Fenfluramine and Netupitant-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: Monitor seizure frequency if antiemetic therapy is repeated or prolonged; no empiric change is needed.
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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