Drug interactions
Bendamustine + Primidone
Severity: Minor
Bendamustine and Primidone: minor 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 and acts as an enzyme inducer, which may increase CYP1A2 metabolism of bendamustine. The clinical effect is likely small and uncertain.
What this interaction means in plain words
Bendamustine and Primidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Bendamustine belongs to Oncology; Primidone belongs to Central Nervous System.
Why it happens
Enzyme induction by primidone and its phenobarbital metabolite may increase CYP1A2 metabolism of bendamustine.
What to do
No routine adjustment is needed; monitor response and toxicity during concurrent use.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Bendamustine
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 Bendamustine with Primidone?
MediHelp rates the interaction as minor. Bendamustine and Primidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Primidone is metabolized to phenobarbital and acts as an enzyme inducer, which may increase CYP1A2 metabolism of bendamustine. The clinical effect is likely small and uncertain.
How serious is the interaction between Bendamustine and Primidone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine adjustment is needed; monitor response and toxicity during concurrent use.
What other medicines interact with Bendamustine?
MediHelp also lists interactions of Bendamustine with, for example, Axicabtagene ciloleucel, Brexucabtagene autoleucel, Chlorambucil. The full list is on the Bendamustine page.
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