Drug interactions
Influenza virus vaccine adjuvanted + Methotrexate
Severity: Moderate
Influenza virus vaccine adjuvanted and Methotrexate: 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
Methotrexate-induced immunosuppression may reduce the antibody response to the adjuvanted H5N1 vaccine. Protection may be less robust than in immunocompetent recipients.
What this interaction means in plain words
Influenza virus vaccine adjuvanted and Methotrexate 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
Methotrexate impairs lymphocyte proliferation and antibody production.
What to do
Vaccinate when indicated rather than withholding it, and continue other protective measures. Consider whether the full schedule is completed on time.
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 Methotrexate
- Acitretin + Methotrexate Contraindicated
- Adenovirus types 4 and 7 live + Methotrexate Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Methotrexate Contraindicated
- Ketorolac + Methotrexate Contraindicated
- Measles mumps and rubella vaccine live + Methotrexate Contraindicated
- Measles mumps and rubella vaccine + Methotrexate Contraindicated
Frequently asked questions
Can I take Influenza virus vaccine adjuvanted with Methotrexate?
MediHelp rates the interaction as moderate. Influenza virus vaccine adjuvanted and Methotrexate 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. Methotrexate-induced immunosuppression may reduce the antibody response to the adjuvanted H5N1 vaccine. Protection may be less robust than in immunocompetent recipients.
How serious is the interaction between Influenza virus vaccine adjuvanted and Methotrexate?
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 when indicated rather than withholding it, and continue other protective measures. Consider whether the full schedule is completed on time.
What other medicines interact with Methotrexate?
MediHelp also lists interactions of Methotrexate with, for example, Acitretin, Adenovirus types 4 and 7 live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Methotrexate page.
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