Valerian root has been the primary herb of choice for supporting a restful sleep since the ninth century. Modern research has confirmed this traditional use and has identified valerenic acid a component of the essential oil as primarily responsible for its relaxing effects. Planetary Formulas Full Spectrum Valerian Extract combines 450 mg of a concentrated standardized extract yielding 0.8% valerenic acid with 200 mg of organically cultivated whole valerian root.Other products from HerbsPro