From: Patient needs and preferences for herb-drug-disease interaction alerts: a structured interview study
 | Frequency |
---|---|
Taking St. John’s wort with warfarin frequently results in an interaction | 82% |
Taking St. John’s wort with warfarin can cause a serious reaction. | 88% |
We strongly recommend that you inform your doctor and consider not taking St. John’s wort | 90% |
You are at greater risk because you have high blood pressure and have experienced an episode of bleeding | 94% |
Taking St. John’s wort with warfarin can cause you to have a stroke | 96% |
Taking St. John’s wort with warfarin decreases the clotting ability of your blood | 88% |
A recent article described two cases where patients who were taking St. John’s wort with warfarin had strokes | 62% |