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Drug interactions

Clobazam + Cyclizine

Severity: Moderate

Clobazam and Cyclizine: 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

Clobazam is a benzodiazepine, and combining it with a sedating antihistamine increases drowsiness, impaired coordination and possibly respiratory depression. Older and frail patients are most vulnerable.

What this interaction means in plain words

Clobazam and Cyclizine 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.

Clobazam belongs to Central Nervous System; Cyclizine belongs to Respiratory.

Evidence level: Moderate

Why it happens

Additive CNS depression via GABA-A potentiation and central H1 blockade.

What to do

Monitor sedation and respiratory status, advise against driving, and reduce doses if oversedation occurs.

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 Clobazam with Cyclizine?

MediHelp rates the interaction as moderate. Clobazam and Cyclizine 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. Clobazam is a benzodiazepine, and combining it with a sedating antihistamine increases drowsiness, impaired coordination and possibly respiratory depression. Older and frail patients are most vulnerable.

How serious is the interaction between Clobazam and Cyclizine?

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 respiratory status, advise against driving, and reduce doses if oversedation occurs.

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

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

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