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Drug interactions

Hydroxyzine + Ozanimod

Severity: Moderate

Hydroxyzine and Ozanimod: moderate 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

Ozanimod can cause heart rate slowing and conduction effects, and hydroxyzine can prolong QT; bradycardia increases the risk of torsades de pointes. The combination is therefore potentially arrhythmogenic.

What this interaction means in plain words

Hydroxyzine and Ozanimod can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Hydroxyzine belongs to Respiratory; Ozanimod belongs to Central Nervous System.

Evidence level: Low

Why it happens

Bradycardia from S1P receptor modulation may add to hydroxyzine-related QT prolongation.

What to do

Obtain a baseline ECG and heart rate before use, and monitor for bradycardia or QT prolongation. Consider an alternative to hydroxyzine in patients with cardiac risk factors.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

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 Hydroxyzine with Ozanimod?

MediHelp rates the interaction as moderate. Hydroxyzine and Ozanimod can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Ozanimod can cause heart rate slowing and conduction effects, and hydroxyzine can prolong QT; bradycardia increases the risk of torsades de pointes. The combination is therefore potentially arrhythmogenic.

How serious is the interaction between Hydroxyzine and Ozanimod?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and heart rate before use, and monitor for bradycardia or QT prolongation. Consider an alternative to hydroxyzine in patients with cardiac risk factors.

What other medicines interact with Hydroxyzine?

MediHelp also lists interactions of Hydroxyzine with, for example, Droperidol, Pimozide, Thioridazine. The full list is on the Hydroxyzine page.

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