состав валериана и его полезность?

http://ru.wikipedia.org/wiki/%D0%92%D0%B0%D0%BB%D0%B5%D1%80%D1%8C%D1%8F%D0%BD%D0%BA%D0%B0#.D0.94.D0.B5.D0.B9.D1.81.D1.82.D0.B2.D0.B8.D0.B5_.D0.BD.D0.B0_.D0.BA.D0.BE.D1.88.D0.B0.D1.87.D1.8C.D0.B8.D1.85