Rootstock and roots of valerian.
Quality is defined in the European Pharmacopoeia (Ph. Eur.):
HMPC - Monograph: well-established use as dry extracts (DEV 3-7,4:1, extractant ethanol 40 - 70 %): mild nervous tension, sleep disorders. Also well-established use in combinations of valerian root and hop cones: sleep disorders. Additionally traditional-use: valerian root cut drug and other dry extracts, liquid extracts, valerian tincture, valerian fresh plant press juice and valerian essential oil: mild stress-related symptoms, sleep aid
ESCOP monograph: mild nervous tension and/or difficulty falling asleep.
Commission E monograph: restlessness, nervous-induced difficulty falling asleep.