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Drug interactions

Chlorzoxazone + Diazepam

Severity: Moderate

Chlorzoxazone and Diazepam: 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 drowsiness and dizziness, so combined use may intensify sedation and impair coordination. The effect is typically manageable with attention to dose.

What this interaction means in plain words

Chlorzoxazone and Diazepam 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; Diazepam belongs to Musculoskeletal.

Evidence level: Low

Why it happens

Additive CNS depression through GABA-A potentiation and centrally acting muscle relaxant effects.

What to do

Monitor for oversedation and advise against driving or operating machinery until the response is known. 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 Diazepam?

MediHelp rates the interaction as moderate. Chlorzoxazone and Diazepam 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 drowsiness and dizziness, so combined use may intensify sedation and impair coordination. The effect is typically manageable with attention to dose.

How serious is the interaction between Chlorzoxazone and Diazepam?

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 oversedation and advise against driving or operating machinery until the response is known. Reduce the dose of one agent if sedation is excessive.

What other medicines interact with Diazepam?

MediHelp also lists interactions of Diazepam with, for example, Calcium / magnesium / potassium / sodium oxybates, Alfentanil, Alprazolam. The full list is on the Diazepam page.

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

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