Fo-Ti Root Powder (He Shou Wu) Cured Fo-Ti is used for dizziness, tinnitus, insomnia, premature graying, hair loss, numbness of limbs, weak knee and back, soreness of knee and back, common weakness, hyper-lipemia. Raw and cured Fo-Ti is distinct in each preparation, classic properties and uses. Raw Fo-Ti is simply the cleaned and dried root tuber whilst cured Fo-Ti has undergone a complex prolonged cooking method with black soybean broth. Raw Fo-Ti is more than fifty times more toxic than cured Fo-Ti and has sturdy laxative properties. By contrast, cured Fo-Ti is fairly nontoxic and has tiny or no laxative effects since processing destroys most of the laxative ingredients but increases the immunostimulating elements. Cured Fo-Ti is regarded by the Chinese as one of the most important anti-aging herbs and is extensively utilized in tonic formulas. Contraindications: Some people who are sensitive to Fo-Ti may develop a skin rash. Very high doses may cause numbness in the arms or legs.