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Drug interactions

Cyclizine + Droperidol

Severity: Moderate

Cyclizine and Droperidol: 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

Both drugs cause sedation, and droperidol can prolong the QT interval, which matters in patients with other risk factors. Cyclizine also has dopamine-related and anticholinergic actions that may add to extrapyramidal or antimuscarinic effects.

What this interaction means in plain words

Cyclizine and Droperidol 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.

Evidence level: Low

Why it happens

Additive CNS depression and anticholinergic effects, with droperidol-related QT prolongation as an added risk.

What to do

Monitor sedation, and obtain an ECG with electrolyte correction in patients with QT risk factors. Avoid stacking multiple antiemetics where possible.

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 Cyclizine with Droperidol?

MediHelp rates the interaction as moderate. Cyclizine and Droperidol 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. Both drugs cause sedation, and droperidol can prolong the QT interval, which matters in patients with other risk factors. Cyclizine also has dopamine-related and anticholinergic actions that may add to extrapyramidal or antimuscarinic effects.

How serious is the interaction between Cyclizine and Droperidol?

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 sedation, and obtain an ECG with electrolyte correction in patients with QT risk factors. Avoid stacking multiple antiemetics where possible.

What other medicines interact with Cyclizine?

MediHelp also lists interactions of Cyclizine with, for example, Calcium / magnesium / potassium / sodium oxybates, Henbane, Sodium oxybate. The full list is on the Cyclizine page.

Full monographs, dosing and an interaction checker in the MediHelp app

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