Mangosteen WHAT IS MANGOSTEEN? Mangosteen (or Garcinia mangostana), also known as purple mangosteen, is a tropical evergreen tree native to Southeast Asia, whose fruit is rich in a range of antioxidant compounds. The mangosteen fruit was once banned in the U.S. over fears of introducing the Asian fruit fly into the U.S., this ban was lifted in 200. Visit - https://www.nationalnutrition.ca/antioxidants/single-antioxidants/mangosteen.html