Green Tea contains beneficial flavonoids, which are natural phytochemicals. Green Tea Extract provides antioxidant support and health-enhancing properties. Nature's Bounty's Natural Whole Herb products utilize ground plant parts to provide the natural components in the amounts found in nature. Nature's Bounty's Guarantee: We use only the finest quality herbs and spices. Each is screened and finely milled for quick release. Nature's Bounty's preservative-free gelatin capsules contain pure milled herb powder.