Green tea does contain caffeine and, in some cases, contains more caffeine than the same amount of black tea. Even decaffeinated green tea contains a small amount of caffeine. More »

There are an average of 5 milligrams of caffeine in one Lipton black decaf tea bag. In one bag of Lipton decaf green tea, there are 4 milligrams of caffeine. More »

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All true tea leaves from the Camellia sinensis tree, including black, green, oolong and white varieties, contain 30 to 90 milligrams of caffeine per 8-ounce cup. Even decaffeinated teas contain 1 to 20 percent of the tea... More »

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Green tea does contain caffeine. An 8-ounce serving of brewed green tea can contain 24 to 45 milligrams of caffeine. However, other types of teas and coffee can have a higher quantity of caffeine. More »

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Green tea is a good source of antioxidants called polyphenols, which may protect against cancer and heart disease, according to MedlinePlus. Green tea also improves mental alertness because of its caffeine content. Some ... More »

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Differences between green and black tea include their hue, caffeine levels, antioxidant profiles and method of processing. Both green and black tea come from the same plant, but the processing methods give each type a di... More »

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Green tea can stain the teeth, though not as much as black tea because of its lighter color. Tannins in tea promote staining of the teeth by causing chromagens, the pigmented molecules in foods and beverages, to attach t... More »

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