Reishi is known as the herb of immortality in Traditional Chinese Medicine and is a potent immune booster. Reishi has been shown to possess broad spectrum immune modulating activity. Reishi Mushroom tea is thought to protect the liver and the cardiovascular system and potentially stabilize the nervous system's adaptogenic qualities. It may also stimulate the immune system to fight infection and foreign cells, inhibit tumor growth, lower blood pressure, and stabilize blood sugar.