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Drug interactions

Clozapine + Rilpivirine

Severity: Moderate

Clozapine and Rilpivirine: 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

Rilpivirine can prolong the QT interval at supratherapeutic doses, and clozapine also carries QT and arrhythmia risk. The combined risk is greater with electrolyte abnormalities or other QT-prolonging drugs.

What this interaction means in plain words

Clozapine and Rilpivirine 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.

Clozapine belongs to Central Nervous System; Rilpivirine belongs to Anti Virals.

Evidence level: Low

Why it happens

Additive effects on cardiac repolarization.

What to do

Check a baseline ECG and electrolytes and repeat if risk factors are present. Correct potassium and magnesium deficits.

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 Clozapine with Rilpivirine?

MediHelp rates the interaction as moderate. Clozapine and Rilpivirine 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. Rilpivirine can prolong the QT interval at supratherapeutic doses, and clozapine also carries QT and arrhythmia risk. The combined risk is greater with electrolyte abnormalities or other QT-prolonging drugs.

How serious is the interaction between Clozapine and Rilpivirine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check a baseline ECG and electrolytes and repeat if risk factors are present. Correct potassium and magnesium deficits.

What other medicines interact with Clozapine?

MediHelp also lists interactions of Clozapine with, for example, Deferiprone, Irinotecan, Pimozide. The full list is on the Clozapine page.

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