Drug interactions
Fluorouracil + Influenza virus vaccine trivalent adjuvanted
Severity: Minor
Fluorouracil and Influenza virus vaccine trivalent adjuvanted: 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
Chemotherapy-related immunosuppression can blunt the antibody response to influenza vaccine, leaving patients less protected. The inactivated vaccine is not itself unsafe and remains recommended in cancer patients.
What this interaction means in plain words
Fluorouracil and Influenza virus vaccine trivalent adjuvanted have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Cytotoxic suppression of lymphocytes reduces vaccine immunogenicity.
What to do
Do not withhold vaccination; ideally vaccinate before chemotherapy or between cycles when counts are recovering, and do not rely on a single dose for protection.
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 Fluorouracil
Frequently asked questions
Can I take Fluorouracil with Influenza virus vaccine trivalent adjuvanted?
MediHelp rates the interaction as minor. Fluorouracil and Influenza virus vaccine trivalent adjuvanted have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Chemotherapy-related immunosuppression can blunt the antibody response to influenza vaccine, leaving patients less protected. The inactivated vaccine is not itself unsafe and remains recommended in cancer patients.
How serious is the interaction between Fluorouracil and Influenza virus vaccine trivalent adjuvanted?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not withhold vaccination; ideally vaccinate before chemotherapy or between cycles when counts are recovering, and do not rely on a single dose for protection.
What other medicines interact with Fluorouracil?
MediHelp also lists interactions of Fluorouracil with, for example, Adenovirus types 4 and 7 live, Axicabtagene ciloleucel, Belatacept. The full list is on the Fluorouracil page.
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