Drug interactions
Hydroxychloroquine + Iloperidone
Severity: Major
Hydroxychloroquine and Iloperidone: 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
Iloperidone is an atypical antipsychotic that prolongs the QT interval, and hydroxychloroquine can have the same effect. Combined use increases the risk of torsades de pointes and sudden cardiac death.
What this interaction means in plain words
Hydroxychloroquine and Iloperidone 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.
Hydroxychloroquine belongs to Musculoskeletal; Iloperidone belongs to Central Nervous System.
Why it happens
Additive blockade of cardiac potassium channels produces additive QT prolongation.
What to do
Avoid the combination where possible and consider an antipsychotic with lower QT liability. If it is necessary, obtain a baseline ECG, correct electrolytes, and monitor the QTc.
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 Hydroxychloroquine
- Arsenic trioxide + Hydroxychloroquine Contraindicated
- Cisapride + Hydroxychloroquine Contraindicated
- Dronedarone + Hydroxychloroquine Contraindicated
- Hydroxychloroquine + Pimozide Contraindicated
- Hydroxychloroquine + Thioridazine Contraindicated
- Hydroxychloroquine + Vandetanib Contraindicated
Other interactions of Iloperidone
- Iloperidone + Thioridazine Contraindicated
- Alfuzosin + Iloperidone Major
- Amiodarone + Iloperidone Major
- Amisulpride + Iloperidone Major
- Amitriptyline + Iloperidone Major
- Anagrelide + Iloperidone Major
Frequently asked questions
Can I take Hydroxychloroquine with Iloperidone?
MediHelp rates the interaction as major. Hydroxychloroquine and Iloperidone 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. Iloperidone is an atypical antipsychotic that prolongs the QT interval, and hydroxychloroquine can have the same effect. Combined use increases the risk of torsades de pointes and sudden cardiac death.
How serious is the interaction between Hydroxychloroquine and Iloperidone?
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 where possible and consider an antipsychotic with lower QT liability. If it is necessary, obtain a baseline ECG, correct electrolytes, and monitor the QTc.
What other medicines interact with Hydroxychloroquine?
MediHelp also lists interactions of Hydroxychloroquine with, for example, Arsenic trioxide, Cisapride, Dronedarone. The full list is on the Hydroxychloroquine page.
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