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Drug interactions

Chlorpromazine + Rolapitant

Severity: Moderate

Chlorpromazine and Rolapitant: 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

Chlorpromazine is metabolized by CYP2D6, so rolapitant may raise its levels. This may increase sedation, hypotension, extrapyramidal effects and QT prolongation.

What this interaction means in plain words

Chlorpromazine and Rolapitant 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.

Chlorpromazine belongs to Central Nervous System; Rolapitant belongs to Gastrointestinal Tract.

Evidence level: Moderate

Why it happens

Rolapitant inhibits CYP2D6, decreasing chlorpromazine clearance.

What to do

Monitor for sedation, hypotension and extrapyramidal symptoms, and consider a lower chlorpromazine dose. Continue monitoring for at least 28 days after rolapitant.

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 Chlorpromazine with Rolapitant?

MediHelp rates the interaction as moderate. Chlorpromazine and Rolapitant 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. Chlorpromazine is metabolized by CYP2D6, so rolapitant may raise its levels. This may increase sedation, hypotension, extrapyramidal effects and QT prolongation.

How serious is the interaction between Chlorpromazine and Rolapitant?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for sedation, hypotension and extrapyramidal symptoms, and consider a lower chlorpromazine dose. Continue monitoring for at least 28 days after rolapitant.

What other medicines interact with Rolapitant?

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

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