Drug interactions
Fludrocortisone + Influenza virus vaccine quadrivalent intranasal
Severity: Major
Fludrocortisone and Influenza virus vaccine quadrivalent intranasal: major 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
The intranasal influenza vaccine is live attenuated. Corticosteroid-induced immunosuppression could allow vaccine virus replication and may also reduce the immune response. The risk is greater with higher or prolonged steroid exposure than with replacement-dose fludrocortisone.
What this interaction means in plain words
Fludrocortisone 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
Corticosteroid immunosuppression reduces control of live attenuated virus and blunts vaccine immunogenicity.
What to do
Use an inactivated influenza vaccine instead in patients on systemic corticosteroids. Give the live intranasal vaccine only after specialist review and when steroid exposure is non-immunosuppressive.
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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Other interactions of Fludrocortisone
Frequently asked questions
Can I take Fludrocortisone with Influenza virus vaccine quadrivalent intranasal?
MediHelp rates the interaction as major. Fludrocortisone 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 is live attenuated. Corticosteroid-induced immunosuppression could allow vaccine virus replication and may also reduce the immune response. The risk is greater with higher or prolonged steroid exposure than with replacement-dose fludrocortisone.
How serious is the interaction between Fludrocortisone 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 influenza vaccine instead in patients on systemic corticosteroids. Give the live intranasal vaccine only after specialist review and when steroid exposure is non-immunosuppressive.
What other medicines interact with Fludrocortisone?
MediHelp also lists interactions of Fludrocortisone with, for example, Mifepristone, Aldesleukin, Amphotericin b. The full list is on the Fludrocortisone page.
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