I have heard that green tea contains no caffeine, is that true? No, green tea isn't caffeine-free. A brewed cup of Green tea has slightly less caffeine than a brewed cup of black tea (45 milligrams vs. 55 milligrams). However, caffeine content of either black or green tea depends on the preparation method, brewing time, the amount of tea leaves used, and the size of the tea bags. To learn more about the variety of Green Teas that LIPTON offers, please click here. GO BACK