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Note: The resources listed in this guide are not intended to be fully systematic or complete, nor does inclusion here imply any endorsement or recommendation by The University of Maryland or the Center for Integrative Medicine. The University of Maryland and the Center for Integrative Medicine make no warranties, express or implied, about the value or utility for any purpose of the information and resources contained herein.

Possible Interactions with: Quercetin

Interactions:

If you are being treated with any of the following medications, you should not use quercetin supplements without first talking to your health care provider.

Anticoagulants (blood thinners) -- Quercetin may enhance the effect of these drugs, increasing your risk for bleeding:

Warfarin (Coumadin)
Clopidogrel (Plavix)
Aspirin

Chemotherapy -- Test tube and animal studies suggest that quercetin may enhance the effects of doxorubicin and cisplatin, two chemotherapy medications used to treat cancer. In addition, some doctors believe taking antioxidants at the same time as chemotherapy can be harmful, while others believe it can be helpful. Talk to your oncologist before taking any supplements if you are undergoing chemotherapy.

Corticosteroids -- Quercetin may cause these drugs to stay in the body longer.

Cyclosporine -- Quercetin may interfere with the body's absorption of this drug, which is used to suppress the immune system.

Drug Interactions:

Doxorubicin

Alternative Names:

Quercetin

Reviewed last on: 9/23/2007
Steven D. Ehrlich, NMD, private practice specializing in complementary and alternative medicine, Phoenix, AZ. Review provided by VeriMed Healthcare Network.

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