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Arsenic trioxide + Ziprasidone

Gravità: Controindicata

Arsenic trioxide and Ziprasidone: contraindicated interaction.

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Sintesi

Both drugs prolong the QT interval, and arsenic trioxide is known to cause torsades de pointes and complete AV block. Together they markedly raise the risk of life-threatening ventricular arrhythmia. Ziprasidone labeling lists this combination as contraindicated.

Cosa significa questa interazione in parole semplici

Arsenic trioxide and Ziprasidone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.

Arsenic trioxide belongs to Oncology; Ziprasidone belongs to Central Nervous System.

Livello di evidenza: High

Perché avviene

Additive prolongation of cardiac repolarization through delayed rectifier potassium channel (hERG) blockade.

Cosa fare

Do not co-administer; use an antipsychotic with lower QT liability if one is needed during arsenic trioxide therapy. Correct potassium and magnesium and monitor ECGs if any antipsychotic is unavoidable.

Cosa chiedere al farmacista

  • Is there an alternative to one of these two medicines for me?
  • If both are essential, who is monitoring me and how often?
  • Which symptoms mean I should stop and seek help straight away?

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

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Domande frequenti

Can I take Arsenic trioxide with Ziprasidone?

MediHelp rates the interaction as contraindicated. Arsenic trioxide and Ziprasidone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both drugs prolong the QT interval, and arsenic trioxide is known to cause torsades de pointes and complete AV block. Together they markedly raise the risk of life-threatening ventricular arrhythmia. Ziprasidone labeling lists this combination as contraindicated.

How serious is the interaction between Arsenic trioxide and Ziprasidone?

MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not co-administer; use an antipsychotic with lower QT liability if one is needed during arsenic trioxide therapy. Correct potassium and magnesium and monitor ECGs if any antipsychotic is unavoidable.

What other medicines interact with Ziprasidone?

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

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