Reishi a.k.a Spiritual mushroom: Reishi has long been used for its immune boosting and strengthening effects it has on the body. In TCM it is used to calm the mind, enhancing one's ability to foster wisdom hence the name Spiritual Mushroom. It also boosts the body’s healing ability, and promotes longevity and is a great herb for those that are feeling weak or fatigued due to overwork. From a western perspective it contains active compounds known as polysaccharides. These can have immune-boosting effects, such as increasing the activity of white blood cells. Always consult a doctor or TCM practitioner before taking it to see if it is suitable for you.