Drug interactions
Fludarabine + Influenza virus vaccine adjuvanted
Severity: Moderate
Fludarabine and Influenza virus vaccine adjuvanted: 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
The adjuvanted H5N1 vaccine is inactivated, so it is not an infection risk, but the immunosuppression and lymphopenia caused by fludarabine may markedly reduce the antibody response. Protection may be inadequate.
What this interaction means in plain words
Fludarabine and Influenza virus vaccine adjuvanted 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
Fludarabine-induced lymphocyte depletion impairs the immune response to vaccination.
What to do
Vaccinate before therapy where feasible or after immune recovery; if given during treatment, assume protection may be incomplete and maintain other preventive 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 Fludarabine
- Adenovirus types 4 and 7 live + Fludarabine Contraindicated
- Fludarabine + Pentostatin Contraindicated
- Belatacept + Fludarabine Major
- Dengue vaccine + Fludarabine Major
- Etrasimod + Fludarabine Major
- Fingolimod + Fludarabine Major
Frequently asked questions
Can I take Fludarabine with Influenza virus vaccine adjuvanted?
MediHelp rates the interaction as moderate. Fludarabine and Influenza virus vaccine adjuvanted 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. The adjuvanted H5N1 vaccine is inactivated, so it is not an infection risk, but the immunosuppression and lymphopenia caused by fludarabine may markedly reduce the antibody response. Protection may be inadequate.
How serious is the interaction between Fludarabine and Influenza virus vaccine adjuvanted?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Vaccinate before therapy where feasible or after immune recovery; if given during treatment, assume protection may be incomplete and maintain other preventive measures.
What other medicines interact with Fludarabine?
MediHelp also lists interactions of Fludarabine with, for example, Adenovirus types 4 and 7 live, Pentostatin, Belatacept. The full list is on the Fludarabine page.
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