Green Tea 500 mg 90 caps by Karuna is a dietary supplement rich in antioxidant support through green tea?s polyphenols. As shown by much research, the chemicals in this substance are extremely effective in acting as body protectors by eliminating free radicals. Because of this, it is also believed to protect internal structures, including those of DNA, membrane walls, skin, cartilage, joints, the liver, neurons and the entire cardiovascular system.