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. 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. 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. 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). 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. Valerian root is often used for sleep and anxiety. While side effects are rare, they can occur, especially when you take high doses, and these can be serious. 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. This fact sheet provides basic information about valerian—common names, usefulness and safety, and resources for more information. Valerian is an herb used to promote relaxation and sleep. This article explains all you need to know about valerian and its effects and safety. 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.