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Drug interactions

Pazopanib + Ziprasidone

Severity: Major

Pazopanib and Ziprasidone: 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 prolong the QT interval, so used together they may increase the risk of torsades de pointes. Pazopanib labeling warns of QT prolongation and ziprasidone is to be avoided with other QT-prolonging drugs.

What this interaction means in plain words

Pazopanib and Ziprasidone 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; Ziprasidone belongs to Central Nervous System.

Evidence level: Moderate

Why it happens

Additive QT interval prolongation through cardiac repolarization effects.

What to do

Avoid the combination if possible; otherwise obtain baseline and periodic ECGs and keep potassium and magnesium within normal range.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Pazopanib with Ziprasidone?

MediHelp rates the interaction as major. Pazopanib and Ziprasidone 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 prolong the QT interval, so used together they may increase the risk of torsades de pointes. Pazopanib labeling warns of QT prolongation and ziprasidone is to be avoided with other QT-prolonging drugs.

How serious is the interaction between Pazopanib and Ziprasidone?

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 the combination if possible; otherwise obtain baseline and periodic ECGs and keep potassium and magnesium within normal range.

What other medicines interact with Ziprasidone?

MediHelp also lists interactions of Ziprasidone with, for example, Amiodarone, Amitriptyline, Arsenic trioxide. The full list is on the Ziprasidone page.

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