Some curative properties of Panax ginseng C.A. Meyer species. The Panax ginseng root has been used for centuries by the Chinese for conditions of weakness, tiredness, low resistance, stress, debility, convalescence, aging and poor metabolism. In Europe, clinical trials have found an increase in reaction time, alertness, concentration and visual and motor coordination using this herb. It has also been used to improve physical performance and work capacity, regulate the adrenal glands, help prevent exhaustion and stimulate the immune system.