| Green tea leaves contain the powerful antioxidant compounds known as catechins (which contain the powerful EGCG), vitamins A, B1, B2, B3, C, E, niacin, potassium, calcium, phosphorus, iron, carotene, potassium, manganese, zinc, copper and naturally occurring fluoride. | Green tea is also a good source of proteins, chlorophyll, lignin, and amino acids including theanine. On average sencha has 30% more catechin (antioxidants), more than 4 times as much vitamin C and 2.5 times more vitamin E. |