Drug interactions
Cyclophosphamide + Influenza virus vaccine trivalent adjuvanted
Severity: Moderate
Cyclophosphamide and Influenza virus vaccine trivalent 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
Cyclophosphamide can reduce the antibody response to influenza vaccination. The vaccine is not live, so it is safe, but protection may be inadequate.
What this interaction means in plain words
Cyclophosphamide and Influenza virus vaccine trivalent 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
Cytotoxic immunosuppression impairs vaccine-induced immune response.
What to do
Vaccinate, ideally before chemotherapy or at a point of best immune recovery, and do not withhold the vaccine. Do not rely on vaccination alone for protection.
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 Cyclophosphamide
Frequently asked questions
Can I take Cyclophosphamide with Influenza virus vaccine trivalent adjuvanted?
MediHelp rates the interaction as moderate. Cyclophosphamide and Influenza virus vaccine trivalent 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. Cyclophosphamide can reduce the antibody response to influenza vaccination. The vaccine is not live, so it is safe, but protection may be inadequate.
How serious is the interaction between Cyclophosphamide and Influenza virus vaccine trivalent 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, ideally before chemotherapy or at a point of best immune recovery, and do not withhold the vaccine. Do not rely on vaccination alone for protection.
What other medicines interact with Cyclophosphamide?
MediHelp also lists interactions of Cyclophosphamide with, for example, Adenovirus types 4 and 7 live, Belatacept, Bendamustine. The full list is on the Cyclophosphamide page.
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