Valerian Extract is a dietary supplement made from the root of the valerian plant (Valeriana officinalis). Valerian root has been used for centuries as a natural. its calming and sleep-promoting effects. The capsules typically contain dried valerian root extract, which is believed to have properties due to its ability to increase the levels of gamma-aminobutyric acid (GABA) in the brain. GABA i helps regulate nerve activity and promote relaxation. Valerian root capsules are commonly used to treat insomnia and other sleep disorders. They are often taken before bedtime to help induce sleep and improve sleep quality. Some people also use valerian root capsules to reduce anxiety and stress, as well as to alleviate symptoms of restlessness and irritability.