Korean ginseng helps the body to adapt to physical and mental stress and fatigue. It works best for those who are severely depleted by illness (such as ME) or old age. It can be rather too stimulating for some people, especially if their vital energy is already high.Long-term usage is best conducted under professional supervision. Avoid in high blood pressure, pregnancy, breast-feeding and acute infections. Best avoided by hyperactive, nervous individuals. Seek advice if suffering from a heart condition and steroid therapy. Some authorities advise avoiding coffee and alcohol whilst taking ginseng.