St. John's wort (Hypericum perforatum) is a plant with yellow flowers that has been used to treat depression in European countries for centuries. It is sold in liquid and powder (pill) form and can be found at health food stores and pharmacies.
A person who wants to try St. John's wort should first talk to his or her doctor because it may interfere with treatment for other conditions. Also, herbal products are not regulated in the United States, so ingredients and quality can be inconsistent.
A person should not take St. John's wort while taking:
Last Revised: June 29, 2011
Author: Healthwise Staff
Medical Review: Adam Husney, MD - Family Medicine & Marc S. Micozzi, MD, PhD - Complementary and Alternative Medicine
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