Drug interactions
Paliperidone + Venlafaxine
Severity: Moderate
Paliperidone and Venlafaxine: 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 drugs can prolong the QTc interval, and combined use may raise the risk of arrhythmia. Additive serotonergic and dopamine-blocking activity may also rarely lead to serotonin syndrome or neuroleptic malignant syndrome.
What this interaction means in plain words
Paliperidone and Venlafaxine 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.
Paliperidone belongs to Central Nervous System; Venlafaxine belongs to Central Nervous System.
Why it happens
Additive QT prolongation with additive serotonergic and dopaminergic effects.
What to do
Obtain a baseline ECG in patients with cardiac risk factors and correct electrolyte abnormalities. Monitor for hyperthermia, rigidity, clonus and mental status changes.
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 Venlafaxine
- Isocarboxazid + Venlafaxine Contraindicated
- Methylene blue + Venlafaxine Contraindicated
- Phenelzine + Venlafaxine Contraindicated
- Procarbazine + Venlafaxine Contraindicated
- Rasagiline + Venlafaxine Contraindicated
- Safinamide + Venlafaxine Contraindicated
Other interactions of Paliperidone
- Ibutilide + Paliperidone Contraindicated
- Paliperidone + Pimozide Contraindicated
- Paliperidone + Vandetanib Contraindicated
- Adagrasib + Paliperidone Major
- Amiodarone + Paliperidone Major
- Amisulpride + Paliperidone Major
Frequently asked questions
Can I take Paliperidone with Venlafaxine?
MediHelp rates the interaction as moderate. Paliperidone and Venlafaxine 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 drugs can prolong the QTc interval, and combined use may raise the risk of arrhythmia. Additive serotonergic and dopamine-blocking activity may also rarely lead to serotonin syndrome or neuroleptic malignant syndrome.
How serious is the interaction between Paliperidone and Venlafaxine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG in patients with cardiac risk factors and correct electrolyte abnormalities. Monitor for hyperthermia, rigidity, clonus and mental status changes.
What other medicines interact with Venlafaxine?
MediHelp also lists interactions of Venlafaxine with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Venlafaxine page.
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