Drug interactions
Paroxetine + Vilazodone
Severity: Major
Paroxetine and Vilazodone: major 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 agents increase synaptic serotonin, so concurrent use raises the risk of serotonin syndrome, which can include hyperthermia, rigidity, autonomic instability and altered mental status. The risk is highest at initiation and with dose increases.
What this interaction means in plain words
Paroxetine and Vilazodone can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Paroxetine belongs to Central Nervous System; Vilazodone belongs to Central Nervous System.
Why it happens
Additive serotonergic activity through serotonin reuptake inhibition and vilazodone 5-HT1A partial agonism.
What to do
Avoid combining; cross-taper when switching with close observation. Discontinue both and provide supportive treatment if serotonin syndrome signs appear.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Paroxetine and Vilazodone, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Paroxetine
- Isocarboxazid + Paroxetine Contraindicated
- Methylene blue + Paroxetine Contraindicated
- Paroxetine + Phenelzine Contraindicated
- Paroxetine + Pimozide Contraindicated
- Paroxetine + Procarbazine Contraindicated
- Paroxetine + Selegiline Contraindicated
Other interactions of Vilazodone
- Isocarboxazid + Vilazodone Contraindicated
- Methylene blue + Vilazodone Contraindicated
- Phenelzine + Vilazodone Contraindicated
- Rasagiline + Vilazodone Contraindicated
- Selegiline transdermal + Vilazodone Contraindicated
- Selegiline + Vilazodone Contraindicated
Frequently asked questions
Can I take Paroxetine with Vilazodone?
MediHelp rates the interaction as major. Paroxetine and Vilazodone can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both agents increase synaptic serotonin, so concurrent use raises the risk of serotonin syndrome, which can include hyperthermia, rigidity, autonomic instability and altered mental status. The risk is highest at initiation and with dose increases.
How serious is the interaction between Paroxetine and Vilazodone?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid combining; cross-taper when switching with close observation. Discontinue both and provide supportive treatment if serotonin syndrome signs appear.
What other medicines interact with Paroxetine?
MediHelp also lists interactions of Paroxetine with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Paroxetine page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
