Green tea extract is one of the most popular supplements because it is one of nature’s most time-honored natural health tonics. As a strong antioxidant, green tea’s most notable benefit is its ability to neutralize free radicals. This power comes from green tea’s polyphenol content, specifically the catechins known as epigallocatechin gallate (EGCG). Green tea extract supplements are often standardized to a certain percentage of these polyphenols, ensuring reliable dosage. Our Swanson Superior Herbs line features a few options of standardized formulas—at up to 90% EGCG—to suit different needs. Along with free radical defense, green tea is also used as part of healthy diet and exercise program to manage weight.