In Chinese Ling Zhi means “spirit plant” and has been prized by Chinese royalty and sages for ages for its legendary qualities. This mushroom has a 4,000-year history for use in an unusually wide range of ailments, but is particularly renowned for promoting longevity. It has shown in recent studies to be helpful for treating high cholesterol, hepatitis and other diseases of the liver, normalizing blood pressure, regulating circulatory system and help cure on allergies. Reishi mushroom contains a high amount of polysaccharides, which are essential for proper functioning of the immune system. Chinese and Japanese herbalists have traditionally recommended Reishi mushrooms for insomnia due to their “sleep-promoting factor”. Long-term use may cause significant promotion of slow wave sleep. Further Reishi seems to improve blood oxygenation and makes it greatly helpful to reduce altitude sickness.