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Drug interactions

Cyclizine + Nabilone

Severity: Moderate

Cyclizine and Nabilone: 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

Cyclizine is a sedating antihistamine antiemetic with anticholinergic effects, and nabilone also causes drowsiness and tachycardia. Together they may increase sedation and impair alertness.

What this interaction means in plain words

Cyclizine and Nabilone 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.

Cyclizine belongs to Respiratory; Nabilone belongs to Gastrointestinal Tract.

Evidence level: Low

Why it happens

Additive central nervous system depression through pharmacodynamic synergy.

What to do

Monitor for excessive drowsiness and heart rate changes. Advise patients to avoid driving and alcohol until the response is known.

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 Nabilone?

MediHelp rates the interaction as moderate. Cyclizine and Nabilone 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. Cyclizine is a sedating antihistamine antiemetic with anticholinergic effects, and nabilone also causes drowsiness and tachycardia. Together they may increase sedation and impair alertness.

How serious is the interaction between Cyclizine and Nabilone?

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 excessive drowsiness and heart rate changes. Advise patients to avoid driving and alcohol until the response is known.

What other medicines interact with Nabilone?

MediHelp also lists interactions of Nabilone with, for example, Alfentanil, Amobarbital, Belladonna and opium. The full list is on the Nabilone page.

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

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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