Drug interactions
Fenfluramine + Paliperidone
Severity: Moderate
Fenfluramine and Paliperidone: 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
Fenfluramine acts through serotonin release and receptor activation, and paliperidone blocks serotonin 5-HT2A receptors, so its effect may be reduced. Both drugs can also cause somnolence, and the net sedative effect is variable.
What this interaction means in plain words
Fenfluramine and Paliperidone 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.
Fenfluramine belongs to Central Nervous System; Paliperidone belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism at serotonin receptors, with additive central nervous system effects.
What to do
Monitor seizure control in patients taking fenfluramine for epilepsy, and watch for sedation. Adjust the doses if seizure frequency rises or somnolence becomes excessive.
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 Paliperidone
- Ibutilide + Paliperidone Contraindicated
- Paliperidone + Pimozide Contraindicated
- Paliperidone + Vandetanib Contraindicated
- Adagrasib + Paliperidone Major
- Amiodarone + Paliperidone Major
- Amisulpride + Paliperidone 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 Paliperidone?
MediHelp rates the interaction as moderate. Fenfluramine and Paliperidone 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. Fenfluramine acts through serotonin release and receptor activation, and paliperidone blocks serotonin 5-HT2A receptors, so its effect may be reduced. Both drugs can also cause somnolence, and the net sedative effect is variable.
How serious is the interaction between Fenfluramine and Paliperidone?
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 seizure control in patients taking fenfluramine for epilepsy, and watch for sedation. Adjust the doses if seizure frequency rises or somnolence becomes excessive.
What other medicines interact with Paliperidone?
MediHelp also lists interactions of Paliperidone with, for example, Ibutilide, Pimozide, Vandetanib. The full list is on the Paliperidone page.
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