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Results 1 - 1 of 1 for ARNICA MONTANA OR "ST." "JOHN'S" WORT
  1. Important Information to Know When You Are Taking: Warfarin (Coumadin) and Vitamin K From the National Institutes of Health (National Institutes of Health, Clinical Center) - PDF  
    ... supplements can alter the INR/PT such as: arnica, bilberry, butchers broom, ... St. John’s wort, sweet woodruff, turmeric, willow bark, and wheat grass. ...