This natural and herbal sleep aid is called valerian root. A systematic review and meta-analysis including 16 evidence-based studies indicates that valerian root is widely used and respected by the general population and physicians for its sedative effects and anti-anxiety capabilities. Learn why the herbal supplement valerian may not be as safe as you think, and what to watch for if you try it. What is valerian? Valerian is a flowering plant, the root of which is dried and used as an herbal remedy. Valerian has been used in alternative medicine as a possibly effective aid in treating sleep problems (insomnia). Valerian (Valeriana officinalis) is a flowering plant native to Europe and parts of Asia. Its roots and rhizomes have been used in traditional herbal practices for centuries, particularly to support sleep and relaxation. Overview: Valerian is a plant called Valeriana officinalis. The root and root-like parts of valerian are used to make teas and dietary supplements, such as tablets or capsules. People take. Using valerian root can decrease nighttime awakenings and help you fall asleep faster. Valerian root supplements may ease menopause symptoms like hot flashes and sleep disturbances. Taking. Valerian root is an herbal supplement made from the roots of the valerian plant, which is native to Europe and parts of Asia. It has been used for centuries in traditional medicine for its calming effects. The chief constituent of valerian is a yellowish-green to brownish-yellow oil present in the dried root, varying in content from 0.5 to 2.0%. This variation in quantity may be determined by location; a dry, stony soil yields a root richer in oil than moist, fertile soil. Results from multiple studies indicate that valerian — a tall, flowering grassland plant — may reduce the amount of time it takes to fall asleep and help you sleep better. Of the many valerian species, only the carefully processed roots of the Valeriana officinalis have been widely studied. Valerian root supplements have been found to help people fall asleep faster, improve their sleep quality, and spend more time in a deep sleep stage. However, some studies found that valerian root had no effect or a statistically insignificant effect.