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Drug interactions

Pentazocine + Valerian

Severity: Moderate

Pentazocine 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 mild sedative properties and may add to the drowsiness caused by pentazocine. The effect is generally modest but may impair alertness and psychomotor performance.

What this interaction means in plain words

Pentazocine 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, thought to involve GABAergic activity of valerian.

What to do

Advise patients to avoid valerian while on opioid therapy or to monitor for excessive sedation and avoid driving.

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 Pentazocine with Valerian?

MediHelp rates the interaction as moderate. Pentazocine 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 mild sedative properties and may add to the drowsiness caused by pentazocine. The effect is generally modest but may impair alertness and psychomotor performance.

How serious is the interaction between Pentazocine 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: Advise patients to avoid valerian while on opioid therapy or to monitor for excessive sedation and avoid driving.

What other medicines interact with Pentazocine?

MediHelp also lists interactions of Pentazocine with, for example, Calcium / magnesium / potassium / sodium oxybates, Olanzapine / samidorphan, Phenelzine. The full list is on the Pentazocine page.

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

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