Ginseng is a medicinal herb used primarily for increased stamina and for boosting the immune system and immune system responses. It is used to help relieve fatigue, declining capacity to work and concentration. It has been considered especially helpful as a supplement to cancer therapies. It is said to be effective as an as an antagonist of morphine analgesia and the analgesic effects of opioids. It can be taken as a capsule, pill, tea, tincture or the whole root chewed.