Valerian Valeriana officinalis L. belongs to the Valerianaceaevalerian family, it is one of four most frequently cultivated medicinal plants in Poland. Underground parts of the plant valerian root Valerianae radix constitute a herbal raw material. The herbal raw material contains essential oil, sesquiterpene acids, including valerenic acid, and tannins. The root of valerian has a long history and many proofs of efficiency of actions it has established medical use status in terms of reducing mild nervous stress conditions and sleep disorders. Moreover, it is considered to have a comprehensive effect in case of anxiety-related cardiac and gastric functionality disorders. It is frequently combined with other raw materials with similar use lemon balm, hop, and Passiflora.