The first xanthone rich mangosteen product brought to the commercial market was Xango Juice in 2002. Since then other mangosteen products have been brought to market including teas, oils, juices, powders, and most recently it has been brought to market in a nano delivery system.
Here are some of the products I recommend.
XanthoMyst (nano-emulsion mangosteen xanthone myst)
XANGO (the original patented mangosteen juice)
XanSense (Powdered Mangosteen Concentrate, mix with water and drink)