Drug interactions
Ixazomib + Primidone
Severity: Major
Ixazomib and Primidone: major interaction.
Last updated Sources: US FDA label
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 and acts as a strong enzyme inducer. It is expected to lower ixazomib exposure and risk loss of efficacy.
What this interaction means in plain words
Ixazomib and Primidone can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Ixazomib belongs to Oncology; Primidone belongs to Central Nervous System.
Why it happens
Primidone and its metabolite phenobarbital induce CYP3A4, increasing ixazomib metabolism.
What to do
Avoid concomitant use and switch to a non-inducing anticonvulsant if clinically possible. If unavoidable, monitor disease response.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Ixazomib
- Apalutamide + Ixazomib Major
- Carbamazepine + Ixazomib Major
- Dabrafenib + Ixazomib Major
- Enzalutamide + Ixazomib Major
- Etrasimod + Ixazomib Major
- Fosphenytoin + Ixazomib Major
Other interactions of Primidone
- Lorlatinib + Primidone Contraindicated
- Lurasidone + Primidone Contraindicated
- Primidone + Ranolazine Contraindicated
- Primidone + Sofosbuvir-velpatasvir-voxilaprevir Contraindicated
- Primidone + Voriconazole Contraindicated
- Abiraterone + Primidone Major
Frequently asked questions
Can I take Ixazomib with Primidone?
MediHelp rates the interaction as major. Ixazomib and Primidone can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Primidone is metabolized to phenobarbital and acts as a strong enzyme inducer. It is expected to lower ixazomib exposure and risk loss of efficacy.
How serious is the interaction between Ixazomib and Primidone?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concomitant use and switch to a non-inducing anticonvulsant if clinically possible. If unavoidable, monitor disease response.
What other medicines interact with Ixazomib?
MediHelp also lists interactions of Ixazomib with, for example, Apalutamide, Carbamazepine, Dabrafenib. The full list is on the Ixazomib page.
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