Drug interactions
Dexamethasone + Influenza virus vaccine quadrivalent intranasal
Severity: Major
Dexamethasone and Influenza virus vaccine quadrivalent intranasal: major interaction.
Last updated Sources: US FDA label
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
The intranasal influenza vaccine contains live attenuated virus, and immunosuppressive corticosteroid doses may reduce its effectiveness and allow vaccine virus replication. It is generally avoided in significantly immunosuppressed patients.
What this interaction means in plain words
Dexamethasone and Influenza virus vaccine quadrivalent intranasal can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Glucocorticoid immunosuppression impairs the response to the live vaccine and may permit uncontrolled replication of attenuated virus.
What to do
Use an inactivated injectable influenza vaccine instead in patients on immunosuppressive doses. Wait about one month after high-dose steroids stop before giving live vaccine.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
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 intranasal?
MediHelp rates the interaction as major. Dexamethasone and Influenza virus vaccine quadrivalent intranasal can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. The intranasal influenza vaccine contains live attenuated virus, and immunosuppressive corticosteroid doses may reduce its effectiveness and allow vaccine virus replication. It is generally avoided in significantly immunosuppressed patients.
How serious is the interaction between Dexamethasone and Influenza virus vaccine quadrivalent intranasal?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use an inactivated injectable influenza vaccine instead in patients on immunosuppressive doses. Wait about one month after high-dose steroids stop before giving live vaccine.
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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