Drug interactions
Gemcitabine + Influenza virus vaccine quadrivalent adjuvanted
Severity: Moderate
Gemcitabine and Influenza virus vaccine quadrivalent 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
Cytotoxic chemotherapy such as gemcitabine can blunt the antibody response to inactivated influenza vaccine. The vaccine is not dangerous in this setting but may offer less protection. Vaccination is still recommended for patients on chemotherapy because influenza is a serious risk.
What this interaction means in plain words
Gemcitabine and Influenza virus vaccine quadrivalent 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
Chemotherapy-induced myelosuppression and lymphopenia reduce the humoral immune response to vaccination.
What to do
Do not withhold the inactivated vaccine; where possible time it between chemotherapy cycles, ideally when counts are recovering. Consider household vaccination and early antiviral treatment if exposed.
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 Gemcitabine
Frequently asked questions
Can I take Gemcitabine with Influenza virus vaccine quadrivalent adjuvanted?
MediHelp rates the interaction as moderate. Gemcitabine and Influenza virus vaccine quadrivalent 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. Cytotoxic chemotherapy such as gemcitabine can blunt the antibody response to inactivated influenza vaccine. The vaccine is not dangerous in this setting but may offer less protection. Vaccination is still recommended for patients on chemotherapy because influenza is a serious risk.
How serious is the interaction between Gemcitabine and Influenza virus vaccine quadrivalent 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: Do not withhold the inactivated vaccine; where possible time it between chemotherapy cycles, ideally when counts are recovering. Consider household vaccination and early antiviral treatment if exposed.
What other medicines interact with Gemcitabine?
MediHelp also lists interactions of Gemcitabine with, for example, Adenovirus types 4 and 7 live, Axicabtagene ciloleucel, Belatacept. The full list is on the Gemcitabine page.
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