significant interaction between warfarin and dong quai
September 1999
There's a new report of a significant interaction between warfarin and dong quai.
This herb is promoted as a natural remedy for hot flashes and other menopausal symptoms.
But dong quai can DOUBLE the prothrombin time in warfarin patients. It turns out that this herb contains natural coumarins and other substances that can inhibit blood clotting.
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