Hypericum perforatum is a medicinal herb commonly known as St. John's wort. The plant contains a number of active compounds, including hypericin and hyperforin, which are believed to have therapeutic properties. Some of the synonyms for Hypericum perforatum include Klamath weed, St. John's flower, tipton weed, and goatweed. The herb has a long history of use in traditional medicine for a variety of ailments, including depression, anxiety, and nerve pain. It is also used topically to treat minor wounds and skin irritations. Despite its popularity, the herb should be used with caution and only under the guidance of a healthcare provider, as it can interact with a variety of medications.