Herbal drug treatment.

: Herbal drug treatment has been known for centuries as a part of traditional medicine. Nowadays, it is still considered a useful and natural way to treat several medical conditions, including mental disturbances. The most frequently treated mental conditions include mood disorders (mainly depression), anxiety disorders, somatoform disorders, age-related cognitive decline, and sometimes psychotic disorders. Some herbal formulations, such as St. John's wort, have been analyzed in clinical trials to estimate their real value. The use of other herbal medicines, such as Kava-kava, valerian, and Ginkgo biloba is discussed.