Drug interactions
Bendamustine + Ritlecitinib
Severity: Moderate
Bendamustine and Ritlecitinib: 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
Ritlecitinib inhibits CYP1A2, which contributes to bendamustine metabolism to its minor active metabolites. Bendamustine exposure may rise, and both drugs add immunosuppressive and hematologic effects.
What this interaction means in plain words
Bendamustine and Ritlecitinib 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.
Bendamustine belongs to Oncology; Ritlecitinib belongs to Oncology.
Why it happens
CYP1A2 inhibition by ritlecitinib may reduce bendamustine metabolism, with additive immunosuppression.
What to do
Monitor blood counts and for infection during co-therapy, and consider bendamustine dose adjustment if toxicity develops.
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?
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Other interactions of Bendamustine
Other interactions of Ritlecitinib
Frequently asked questions
Can I take Bendamustine with Ritlecitinib?
MediHelp rates the interaction as moderate. Bendamustine and Ritlecitinib 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. Ritlecitinib inhibits CYP1A2, which contributes to bendamustine metabolism to its minor active metabolites. Bendamustine exposure may rise, and both drugs add immunosuppressive and hematologic effects.
How serious is the interaction between Bendamustine and Ritlecitinib?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood counts and for infection during co-therapy, and consider bendamustine dose adjustment if toxicity develops.
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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