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Drug interactions

Paclitaxel + Pentobarbital

Severity: Moderate

Paclitaxel and Pentobarbital: 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

Barbiturates induce CYP3A4 and CYP2C enzymes and could lower paclitaxel exposure. This may reduce antitumor effect, though specific data for pentobarbital are lacking.

What this interaction means in plain words

Paclitaxel and Pentobarbital 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

Pentobarbital induces hepatic CYP3A4 and CYP2C8, increasing paclitaxel metabolism.

What to do

Avoid prolonged concurrent use when alternatives exist; otherwise monitor for reduced paclitaxel efficacy.

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 Paclitaxel with Pentobarbital?

MediHelp rates the interaction as moderate. Paclitaxel and Pentobarbital 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. Barbiturates induce CYP3A4 and CYP2C enzymes and could lower paclitaxel exposure. This may reduce antitumor effect, though specific data for pentobarbital are lacking.

How serious is the interaction between Paclitaxel and Pentobarbital?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid prolonged concurrent use when alternatives exist; otherwise monitor for reduced paclitaxel efficacy.

What other medicines interact with Paclitaxel?

MediHelp also lists interactions of Paclitaxel with, for example, Adenovirus types 4 and 7 live, Cobicistat, Cyclosporine. The full list is on the Paclitaxel page.

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