What is Valerian Root? Valerian herb is native to Asia and Europe. Even now it is also grown in the US, China and many other Countries. Valerian root contains a number of compounds that may promote sleep and reduce Anxiety. Valerian is most commonly used for sleep disorders, especially the inability to sleep. It produces white, purple, or pink flowers in the summer. Herbal preparations are typically made from the rhizome root of the plant. It is also used to