Does St. Johns Wort adversely interact with prescription drugs?
Taking St. Johns Wort in combination with prescription medications such as benzodiazepines, SSRIs, or SNRIs may cause drowsiness. St. John’s Wort is also believed to decrease the effectiveness of certain prescription drugs, including oral contraceptives and high blood pressure medications. If you are taking a prescription medication, it is recommended that you consult with your prescribing doctor before making any changes or additions to your current treatment plan.