Pu-erh tea is produced mainly in the Yunnan district in the southwestern part of China. It has also gained popularity in Taiwan. Pu-erh tea is used as medicine. Pu-erh tea is used for improving mental alertness and sharp thinking. It is also used for reducing high cholesterol.
How does this work? Pu-erh tea contains caffeine, although not as much caffeine as other teas. Caffeine works by stimulating the central nervous system, heart, and muscles. Pu-erh tea also contains antioxidants and other substances that might help protect the heart and blood vessels.