Drug interactions
Influenza a vaccine + Melphalan
Severity: Moderate
Influenza a vaccine and Melphalan: 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
Melphalan-induced immunosuppression can reduce the antibody response to inactivated H5N1 influenza vaccine. Protection may be inadequate in a patient who needs it.
What this interaction means in plain words
Influenza a vaccine and Melphalan 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 the immune response to vaccine antigens.
What to do
Vaccinate before melphalan when possible. If given during therapy, consider an additional dose after immune recovery and keep other infection-prevention measures in place.
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 Melphalan
- Adenovirus types 4 and 7 live + Melphalan Contraindicated
- Bcg vaccine live + Melphalan Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Melphalan Contraindicated
- Measles mumps and rubella vaccine live + Melphalan Contraindicated
- Measles mumps and rubella vaccine + Melphalan Contraindicated
- Measles mumps rubella and varicella vaccine live + Melphalan Contraindicated
Frequently asked questions
Can I take Influenza a vaccine with Melphalan?
MediHelp rates the interaction as moderate. Influenza a vaccine and Melphalan 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. Melphalan-induced immunosuppression can reduce the antibody response to inactivated H5N1 influenza vaccine. Protection may be inadequate in a patient who needs it.
How serious is the interaction between Influenza a vaccine and Melphalan?
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 melphalan when possible. If given during therapy, consider an additional dose after immune recovery and keep other infection-prevention measures in place.
What other medicines interact with Melphalan?
MediHelp also lists interactions of Melphalan with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Melphalan page.
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