Natural Factors Valerian Root - This popular, natural sleep inducer and herbal tranquilizer has proven very effective in helping people fall asleep faster. Its mild sedative effect is coupled with a heightened awareness which has made it an excellent aid for reducing the symptoms associated with stress. Valerian also has shown to have antispasmodic properties and can be effective at lowering blood pressure, easing menstrual cramps, muscle cramps and aiding in digestion.