Drug interactions
Dexamethasone + Nefazodone
Severity: Moderate
Dexamethasone and Nefazodone: 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
Nefazodone inhibits CYP3A4 and can increase dexamethasone exposure, increasing the risk of corticosteroid adverse effects such as hyperglycemia, mood changes and adrenal suppression.
What this interaction means in plain words
Dexamethasone and Nefazodone 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
Nefazodone inhibits CYP3A4, reducing dexamethasone clearance.
What to do
Monitor for steroid excess and consider a lower dexamethasone dose, or choose an antidepressant without CYP3A4 inhibition.
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 Nefazodone?
MediHelp rates the interaction as moderate. Dexamethasone and Nefazodone 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. Nefazodone inhibits CYP3A4 and can increase dexamethasone exposure, increasing the risk of corticosteroid adverse effects such as hyperglycemia, mood changes and adrenal suppression.
How serious is the interaction between Dexamethasone and Nefazodone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for steroid excess and consider a lower dexamethasone dose, or choose an antidepressant without CYP3A4 inhibition.
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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