* [[Green Tea]]
==Special Precautions of Black Tea==
* See also Precautions [[Green Tea]]
* Black tea is safe for most adults. Too much black tea, such as more than five cups per day, can cause side effects because of the caffeine. These side effects can range from mild to serious and include headache, nervousness, sleep problems, vomiting, diarrhea, irritability, irregular heartbeat, tremor, heartburn, dizziness, ringing in the ears, convulsions, and confusion.
*People who drink black tea or other caffeinated beverages all the time, especially in large amounts, can develop psychological dependence.