171 mg of polyphenols (Research has identified the presence of a combination of antioxidants in Oolong tea which include catechins (EGCg, EGC, ECg and EC), and complex polyphenols such as theaflavins, thearubigins and theabrowins) tea antioxidants. Please visit us at: www.itoen.com. All natural. No calories. Steel. Please recycle this can if facilities exist in your area. A robust shot of polyphenols powered by oolong tea. Oolong is semi-oxidized which makes it unique from green and black tea. Oolong Shot is made from premium whole, loose tea leaves (For more information please visit www.oolongshot.com). www.teastea.com. Polyphenols: Antioxidants in Oolong tea help maintain a healthy heart and neutralize cell-damaging free radicals. Product of Japan.