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Drug interactions

Clonazepam + Valerian

Severity: Moderate

Clonazepam and Valerian: 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

Valerian has sedative properties that may add to the CNS depressant effect of clonazepam. This can increase drowsiness, slow reaction time and impair concentration.

What this interaction means in plain words

Clonazepam and Valerian 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, probably via enhancement of GABAergic activity by valerian constituents.

What to do

Counsel the patient to avoid valerian products while taking clonazepam, or monitor for excess sedation. Advise against driving or operating machinery if drowsy.

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 Clonazepam with Valerian?

MediHelp rates the interaction as moderate. Clonazepam and Valerian 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. Valerian has sedative properties that may add to the CNS depressant effect of clonazepam. This can increase drowsiness, slow reaction time and impair concentration.

How serious is the interaction between Clonazepam and Valerian?

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 to avoid valerian products while taking clonazepam, or monitor for excess sedation. Advise against driving or operating machinery if drowsy.

What other medicines interact with Clonazepam?

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

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

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