Does Cranberry Supplements Interfere with Medications?

Cranberry is considered safe with almost all medications. In medicinal doses it may increase the effect of anti-coagulation drugs like warfarin (Coumadin), causing bleeding.

Do cranberry pills interact with any medications?

Cranberry has no known severe, serious, or moderate interactions with other drugs.

When should you not take cranberry pills?

Anyone who is allergic or sensitive to salicylates, including aspirin, may want to avoid cranberry pills since an adverse reaction is theoretically possible ( 50 ). Furthermore, those with a history of kidney stones should consult their doctor before taking cranberry supplements.