How Much Caffeine is in Tea?

Does Tea Have Caffeine? Short answer: Yes! An eight-ounce cup of brewed black tea has 25-50 milligrams of caffeine, while brewed green tea contains 25-30 milligrams. That’s about half the caffeine in a typical cup of brewed coffee. All tea, including black, green, white and oolong, come from the same plant: Camellia Sinensis. The leaves […]