St. John's wort (Hypericum perforatum)

St. John's wort (Hypericum perforatum) is widely known for its antidepressant effects. In general, most studies have shown that St. John's wort may be an effective treatment for mild to moderate depression, & has fewer side effects than most other prescription antidepressants. But the herb interacts with a variety of medications, including birth control pills, so it is important to take it only under the guidance of a health care provider.