Antioxidant Protection 400 mg Standardized Extract 40% Catechins / 60% Polyphenols Powerful Free Radical ScavengerNOW Green Tea Extract offers a convenient way to obtain the active constituents of Green Tea in a concentrated form. Green Tea Extract contains numerous compounds including Polyphenols and Catechins that provide potent antioxidant benefits. The free radical scavenging properties of Green Tea Extract act through multiple mechanisms to support overall health and well-being.