Drug interactions
Dexamethasone + Midazolam
Severity: Moderate
Dexamethasone and Midazolam: 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
Dexamethasone is a CYP3A4 inducer and can reduce midazolam exposure, especially with oral dosing and prolonged steroid courses. Sedation or anxiolysis may be weaker than expected.
What this interaction means in plain words
Dexamethasone and Midazolam 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.
Dexamethasone belongs to Endocrine; Midazolam belongs to Central Nervous System.
Why it happens
Induction of intestinal and hepatic CYP3A4 increases midazolam first-pass and systemic clearance.
What to do
Monitor clinical effect and titrate midazolam upward if the response is inadequate. Reassess the dose if dexamethasone is stopped.
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 Midazolam
- Atazanavir + Midazolam Contraindicated
- Cobicistat + Midazolam Contraindicated
- Darunavir + Midazolam Contraindicated
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Midazolam Contraindicated
- Fosamprenavir + Midazolam Contraindicated
- Indinavir + Midazolam Contraindicated
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 Midazolam?
MediHelp rates the interaction as moderate. Dexamethasone and Midazolam 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. Dexamethasone is a CYP3A4 inducer and can reduce midazolam exposure, especially with oral dosing and prolonged steroid courses. Sedation or anxiolysis may be weaker than expected.
How serious is the interaction between Dexamethasone and Midazolam?
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 clinical effect and titrate midazolam upward if the response is inadequate. Reassess the dose if dexamethasone is stopped.
What other medicines interact with Midazolam?
MediHelp also lists interactions of Midazolam with, for example, Atazanavir, Cobicistat, Darunavir. The full list is on the Midazolam page.
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