Drug interactions
Pazopanib + Trazodone
Severity: Major
Pazopanib and Trazodone: 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 drugs have been associated with QT prolongation, and pazopanib also carries a risk of torsades de pointes. Using them together may increase the chance of a serious ventricular arrhythmia.
What this interaction means in plain words
Pazopanib and Trazodone 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.
Pazopanib belongs to Oncology; Trazodone belongs to Central Nervous System.
Why it happens
Additive prolongation of cardiac repolarization; pazopanib may also weakly inhibit CYP3A4 and raise trazodone levels.
What to do
Obtain a baseline and follow-up ECG and keep potassium and magnesium within normal range. Consider an alternative antidepressant if QTc becomes prolonged.
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?
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Other interactions of Trazodone
- Arsenic trioxide + Trazodone Contraindicated
- Ibutilide + Trazodone Contraindicated
- Isocarboxazid + Trazodone Contraindicated
- Levoketoconazole + Trazodone Contraindicated
- Methylene blue + Trazodone Contraindicated
- Phenelzine + Trazodone Contraindicated
Other interactions of Pazopanib
- Adagrasib + Pazopanib Major
- Amiodarone + Pazopanib Major
- Amisulpride + Pazopanib Major
- Amobarbital + Pazopanib Major
- Anagrelide + Pazopanib Major
- Apalutamide + Pazopanib Major
Frequently asked questions
Can I take Pazopanib with Trazodone?
MediHelp rates the interaction as major. Pazopanib and Trazodone 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 drugs have been associated with QT prolongation, and pazopanib also carries a risk of torsades de pointes. Using them together may increase the chance of a serious ventricular arrhythmia.
How serious is the interaction between Pazopanib and Trazodone?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline and follow-up ECG and keep potassium and magnesium within normal range. Consider an alternative antidepressant if QTc becomes prolonged.
What other medicines interact with Trazodone?
MediHelp also lists interactions of Trazodone with, for example, Arsenic trioxide, Ibutilide, Isocarboxazid. The full list is on the Trazodone page.
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