Drug interactions
Dexamethasone + Mestranol
Severity: Minor
Dexamethasone and Mestranol: 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
Dexamethasone may induce CYP3A4 and lower exposure to the estrogen, though the effect is weak. Contraceptive efficacy is unlikely to be meaningfully affected by short courses.
What this interaction means in plain words
Dexamethasone and Mestranol 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
Weak CYP3A4 induction by dexamethasone increases estrogen metabolism.
What to do
No routine change is needed; consider counselling on breakthrough bleeding 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 Mestranol?
MediHelp rates the interaction as minor. Dexamethasone and Mestranol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Dexamethasone may induce CYP3A4 and lower exposure to the estrogen, though the effect is weak. Contraceptive efficacy is unlikely to be meaningfully affected by short courses.
How serious is the interaction between Dexamethasone and Mestranol?
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 routine change is needed; consider counselling on breakthrough bleeding 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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