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Drug interactions

Chlorzoxazone + Cinnarizine

Severity: Moderate

Chlorzoxazone and Cinnarizine: 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

Cinnarizine has sedating antihistamine properties and may add to chlorzoxazone-related drowsiness. This can impair concentration and coordination.

What this interaction means in plain words

Chlorzoxazone and Cinnarizine 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.

Chlorzoxazone belongs to Musculoskeletal; Cinnarizine belongs to Respiratory.

Evidence level: Low

Why it happens

Additive CNS depression.

What to do

Counsel the patient about drowsiness and driving, and reduce the dose of one agent if sedation is excessive.

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 Chlorzoxazone with Cinnarizine?

MediHelp rates the interaction as moderate. Chlorzoxazone and Cinnarizine 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. Cinnarizine has sedating antihistamine properties and may add to chlorzoxazone-related drowsiness. This can impair concentration and coordination.

How serious is the interaction between Chlorzoxazone and Cinnarizine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel the patient about drowsiness and driving, and reduce the dose of one agent if sedation is excessive.

What other medicines interact with Chlorzoxazone?

MediHelp also lists interactions of Chlorzoxazone with, for example, Alfentanil, Alprazolam, Amobarbital. The full list is on the Chlorzoxazone page.

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