Drug interactions
Dexamethasone + Influenza virus vaccine quadrivalent
Severity: Moderate
Dexamethasone and Influenza virus vaccine quadrivalent: 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
Systemic corticosteroids may reduce the antibody response to inactivated influenza vaccine. The vaccine is still recommended because patients on steroids are at higher risk of influenza complications.
What this interaction means in plain words
Dexamethasone and Influenza virus vaccine quadrivalent 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-mediated immunosuppression blunts the humoral response to vaccine antigens.
What to do
Give the annual vaccine regardless of steroid therapy, since benefit outweighs the reduced response. Do not delay steroids for it in urgent cases.
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 Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Dexamethasone with Influenza virus vaccine quadrivalent?
MediHelp rates the interaction as moderate. Dexamethasone and Influenza virus vaccine quadrivalent 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. Systemic corticosteroids may reduce the antibody response to inactivated influenza vaccine. The vaccine is still recommended because patients on steroids are at higher risk of influenza complications.
How serious is the interaction between Dexamethasone and Influenza virus vaccine quadrivalent?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give the annual vaccine regardless of steroid therapy, since benefit outweighs the reduced response. Do not delay steroids for it in urgent cases.
What other medicines interact with Dexamethasone?
MediHelp also lists interactions of Dexamethasone with, for example, Bcg vaccine live, Mifepristone, Rilpivirine. The full list is on the Dexamethasone page.
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