Drug interactions
Deflazacort + Japanese encephalitis virus vaccine
Severity: Moderate
Deflazacort and Japanese encephalitis virus 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
Deflazacort may reduce the immune response to the inactivated Japanese encephalitis vaccine, so travellers may be less protected. The vaccine does not pose an infection risk.
What this interaction means in plain words
Deflazacort and Japanese encephalitis virus 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
Glucocorticoid immunosuppression decreases antibody production following vaccination.
What to do
Vaccinate when indicated, ideally completing the series before steroid therapy or at the lowest dose. Reinforce mosquito-avoidance measures and consider serology after the series.
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 Deflazacort
- Adenovirus types 4 and 7 live + Deflazacort Contraindicated
- Bcg vaccine live + Deflazacort Contraindicated
- Deflazacort + Influenza virus vaccine quadrivalent intranasal Contraindicated
- Deflazacort + Measles mumps and rubella vaccine Contraindicated
- Deflazacort + Measles mumps and rubella vaccine live Contraindicated
- Deflazacort + Measles mumps rubella and varicella vaccine live Contraindicated
Frequently asked questions
Can I take Deflazacort with Japanese encephalitis virus vaccine?
MediHelp rates the interaction as moderate. Deflazacort and Japanese encephalitis virus 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. Deflazacort may reduce the immune response to the inactivated Japanese encephalitis vaccine, so travellers may be less protected. The vaccine does not pose an infection risk.
How serious is the interaction between Deflazacort and Japanese encephalitis virus 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: Vaccinate when indicated, ideally completing the series before steroid therapy or at the lowest dose. Reinforce mosquito-avoidance measures and consider serology after the series.
What other medicines interact with Deflazacort?
MediHelp also lists interactions of Deflazacort with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Deflazacort page.
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