Valerian is a perennial plant that has been used as an herbal remedy since the time of the Ancient Greeks, who used it to treat digestive problems. The herb grows in damp areas throughout the Americas, Europe and northern Asia. Valerian root has been used for centuries to treat nervous system disorders, and it is commonly used as a sleep aid as well.
A number of studies have shown that Valerian root extract can improve sleep quality and reduce insomnia, although methodological issues make it difficult to draw firm conclusions about its efficacy.Nonetheless, it is approved by Germany’s Commission E (a counterpart to the US FDA) for treating sleep disturbances.