Matcha's caffeine content can vary depending on how it is grown, brewed, and its quality. Find out how much caffeine is in a ...

We asked registered dietitians to explain green tea's caffeine content, factors that affect how much caffeine is in each cup, and how green tea stacks up to other caffeinated drinks. Green tea ...

Compared to black tea, green teas may have between 20 and 45 milligrams of caffeine, and white teas anywhere from 6 to 60 milligrams. Surprisingly, the differing caffeine content of teas and ...