Green tea is made from the unfermented leaves of Camellia sinensis, the same plant that gives us black and oolong teas. All teas from Camellia sinensis supply antioxidants, but because green tea is the least processed, it is said to contain the most antioxidant polyphenols, which are responsible for its many health benefits.
Each tea bag contains approximately 58 mg of caffeine, as compared to approximately 90 mg in 8 oz of coffee.