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Table 6 Patient preferences regarding types of information they would like to receive (N = 50)

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%