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Tea contains small amounts of theobromine and theophylline, which are xanthines and stimulants, similar to caffeine. [59] Fresh tea leaves in various stages of growth. The astringency in tea can be attributed to the presence of polyphenols. These are the most abundant compounds in tea leaves, making up 30–40% of their composition. [60]
Tea (left) and coffee, the two most common naturally caffeinated drinks. A caffeinated drink, or caffeinated beverage, is a drink that contains caffeine, a stimulant that is legal practically all over the world. Some are naturally caffeinated while others have caffeine added as an ingredient.
Here's everything to know about the caffeine content of green tea. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
Caffeine is a stimulant that occurs naturally in more than 60 plants, including coffee beans, tea leaves, and kola nuts, according to the U.S. National Library of Medicine. But there are also ...
Also contributing to caffeine content are growing conditions, processing techniques, and other variables. Thus, teas contain varying amounts of caffeine. [243] Tea contains small amounts of theobromine and slightly higher levels of theophylline than coffee. Preparation and many other factors have a significant impact on tea, and color is a poor ...
The term "herbal" tea is often used to distinguish these beverages from "true" teas (e.g., black, green, white, yellow, oolong), which are prepared from the cured leaves of the tea plant, Camellia sinensis. Unlike true teas, most tisanes do not naturally contain caffeine (though tea can be decaffeinated, i.e., processed to remove caffeine). [4] [5]