As a Nutritionist, I know that polyphenols aid in allowing your body to fight off potentially harmful free radicals that can make you sick. This green tea extract, thanks to its high antioxidant content, is an easy way to add health-boosting antioxidants to my diet, at an affordable price. Currently, it is helping to improve my overall health by increasing my stamina, giving me its many benefits without the jitters. I can't handle caffeine due to the impact it can have on my digestion, but this quality supplement does not bother my stomach like others have, thankfully, and has given me no side effects. This one will be a keeper! "#sweepstakes" [This review was collected as part of a promotion.]