Drug interactions
Dexamethasone + Quercetin
Severity: Minor
Dexamethasone and Quercetin: 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
Quercetin is a flavonoid supplement that may modulate intestinal P-glycoprotein and drug-metabolising enzymes. Its effect on dexamethasone exposure is not well characterised and any change is likely modest.
What this interaction means in plain words
Dexamethasone and Quercetin 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
Possible modulation of P-glycoprotein efflux by quercetin; the net effect on dexamethasone is not firmly established.
What to do
No routine adjustment is needed; monitor clinical response to dexamethasone if high-dose quercetin supplements are used.
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 Quercetin?
MediHelp rates the interaction as minor. Dexamethasone and Quercetin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Quercetin is a flavonoid supplement that may modulate intestinal P-glycoprotein and drug-metabolising enzymes. Its effect on dexamethasone exposure is not well characterised and any change is likely modest.
How serious is the interaction between Dexamethasone and Quercetin?
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 adjustment is needed; monitor clinical response to dexamethasone if high-dose quercetin supplements are used.
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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