Michigan Practice Exercise 5

Mrs. Jenny Johns is a 46 years old female with history of atrial fibrillation who comes to your pharmacy to fill warfarin.  Patient asks”Can I take over the counter herbal product St. John’s wort because Dr. Oz says it is good for depression?”  There is a drug interaction between these two products. Taking St. John’s Wort with warfarin can result in warfarin not working as well which places the patient at risk for clots.