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Drug interactions

Bortezomib + Primidone

Severity: Moderate

Bortezomib and Primidone: 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

Primidone is metabolized to phenobarbital, a CYP3A4 inducer, and may reduce bortezomib exposure and efficacy.

What this interaction means in plain words

Bortezomib and Primidone 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.

Bortezomib belongs to Oncology; Primidone belongs to Central Nervous System.

Evidence level: Low

Why it happens

Primidone and its metabolite phenobarbital induce CYP3A4, increasing bortezomib clearance.

What to do

Consider a non-inducing anticonvulsant, or monitor disease response closely if unavoidable.

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 Bortezomib with Primidone?

MediHelp rates the interaction as moderate. Bortezomib and Primidone 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. Primidone is metabolized to phenobarbital, a CYP3A4 inducer, and may reduce bortezomib exposure and efficacy.

How serious is the interaction between Bortezomib and Primidone?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Consider a non-inducing anticonvulsant, or monitor disease response closely if unavoidable.

What other medicines interact with Bortezomib?

MediHelp also lists interactions of Bortezomib with, for example, Apalutamide, Carbamazepine, Etrasimod. The full list is on the Bortezomib page.

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