Drug interactions
Bendamustine + Influenza a vaccine
Severity: Moderate
Bendamustine and Influenza a vaccine: 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
Bendamustine causes lymphodepletion and immunosuppression, which can blunt the antibody response to influenza H5N1 vaccination. The patient may therefore be left with inadequate protection.
What this interaction means in plain words
Bendamustine and Influenza a vaccine 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.
Why it happens
Cytotoxic suppression of B and T lymphocytes impairs the immune response to vaccine antigens.
What to do
If feasible, vaccinate before starting bendamustine or at least some weeks away from treatment cycles; do not rely on the response and maintain other protective measures.
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
Frequently asked questions
Can I take Bendamustine with Influenza a vaccine?
MediHelp rates the interaction as moderate. Bendamustine and Influenza a vaccine 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 causes lymphodepletion and immunosuppression, which can blunt the antibody response to influenza H5N1 vaccination. The patient may therefore be left with inadequate protection.
How serious is the interaction between Bendamustine and Influenza a vaccine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: If feasible, vaccinate before starting bendamustine or at least some weeks away from treatment cycles; do not rely on the response and maintain other protective measures.
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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