Description 50% Xanthones High Potency Antioxidant* Dietary Supplement Natural Factors Mangosteen extract is guaranteed to provide over 50% of the valuable compounds known as xanthones. These compounds are directly responsible for mangosteen's health promoting effects.* All Natural Factors products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world. Suggested Use 1 capsule, 2 times per day or as directed by a health professional. Supplement Facts Supplement Facts Serving Size: 1 Capsule