Experimental
DrugTest drug : Granules, Chung A Won 3g (Eucommiaceae, Psoralea corylifolia, Walnut, Ginger) Three times a day, oral administration for 24weeks
Reference drug : Granules, Placebo 3g (Lactose hydrate, Corn starch, Caramel pigment)
Three times a day, oral administration for 24weeks
Other names: Chung A Won