Drug interactions
Ifosfamide + Rabies vaccine
Severity: Moderate
Ifosfamide and Rabies vaccine: 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
Chemotherapy with ifosfamide can reduce the antibody response to rabies vaccine. This matters because inadequate neutralizing antibody levels could leave the patient unprotected after an exposure.
What this interaction means in plain words
Ifosfamide and Rabies vaccine 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 reduces the immune response to vaccine antigens.
What to do
For pre-exposure vaccination, complete the series before starting ifosfamide where feasible. If vaccinated during therapy, check rabies neutralizing antibody titers and revaccinate as needed; post-exposure treatment must never be delayed.
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 Ifosfamide
- Adenovirus types 4 and 7 live + Ifosfamide Contraindicated
- Ifosfamide + Measles mumps and rubella vaccine Contraindicated
- Ifosfamide + Measles mumps and rubella vaccine live Contraindicated
- Ifosfamide + Measles mumps rubella and varicella vaccine live Contraindicated
- Ifosfamide + Measles vaccine Contraindicated
- Ifosfamide + Rotavirus oral vaccine live Contraindicated
Frequently asked questions
Can I take Ifosfamide with Rabies vaccine?
MediHelp rates the interaction as moderate. Ifosfamide and Rabies vaccine 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. Chemotherapy with ifosfamide can reduce the antibody response to rabies vaccine. This matters because inadequate neutralizing antibody levels could leave the patient unprotected after an exposure.
How serious is the interaction between Ifosfamide and Rabies vaccine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: For pre-exposure vaccination, complete the series before starting ifosfamide where feasible. If vaccinated during therapy, check rabies neutralizing antibody titers and revaccinate as needed; post-exposure treatment must never be delayed.
What other medicines interact with Ifosfamide?
MediHelp also lists interactions of Ifosfamide with, for example, Adenovirus types 4 and 7 live, Measles mumps and rubella vaccine, Measles mumps and rubella vaccine live. The full list is on the Ifosfamide page.
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