St John's wort: Hypericum perforatum
St. John's wort (Hypericum perforatum) has a history of use as a medicine dating back to ancient Greece, where it was used for a range of illnesses, including various nervous disorders. St. John's wort also has antibacterial, antioxidant, and antiviral properties. Because of its anti-inflammatory properties, it has been applied to the skin to help heal wounds and burns. St. John's wort is one of the most commonly purchased herbal products in the United States.
[It] is a flowering plant of the genus Hypericum and has been used as a medicinal herb for its antidepressant and anti-inflammatory properties for over 2,000 years. The Greek physicians of the first century recommended the use of St. John’s wort for its medicinal value, and the ancients believed that the plant had mystical and protective qualities.35
St. John’s wort uses, dating back to the ancient Greeks, included treatment for illnesses such as various nervous or mood disorders. Scientists believe it’s native to Europe, parts of Asia and Africa, and the Western United States. St. John’s wort was given its name because it blooms around June 24, the birthday of John the Baptist, and the word “wort” is an old English word for plant.35