Drug interactions
Dexamethasone + Miconazole vaginal
Severity: Minor
Dexamethasone and Miconazole vaginal: minor 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
Miconazole is a CYP3A4 inhibitor, but vaginal use gives low systemic absorption, so a meaningful rise in dexamethasone levels is unlikely. Interaction is mainly theoretical.
What this interaction means in plain words
Dexamethasone and Miconazole vaginal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Potential CYP3A4 inhibition by absorbed miconazole, limited by low vaginal systemic exposure.
What to do
No dose adjustment is usually needed; be alert for steroid excess if used with prolonged high-dose dexamethasone.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Miconazole vaginal?
MediHelp rates the interaction as minor. Dexamethasone and Miconazole vaginal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Miconazole is a CYP3A4 inhibitor, but vaginal use gives low systemic absorption, so a meaningful rise in dexamethasone levels is unlikely. Interaction is mainly theoretical.
How serious is the interaction between Dexamethasone and Miconazole vaginal?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is usually needed; be alert for steroid excess if used with prolonged high-dose dexamethasone.
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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