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• Tea naturally contains caffeine, which may cause a rapid
heart rate, anxiety, insomnia, upset stomach and tremors
• Caffeine content in tea can range from 14 to 60 milligrams
per cup, with black tea containing the highest levels,
oolong tea containing moderate levels, and green and
white teas containing relatively low levels.
• Consuming 200 to 300 milligrams of caffeine per day is
considered moderate intake