Valerian (herb) some affinity for the GABA receptor, a class of receptors on which benzodiazepines are known to act. Valeric acid, which is responsible for the typical odor of mostly older valerian roots, does not have any sedative properties. Valeric acid is related to valproic acid, a widely prescribed anticonvulsant; valproic acid is a derivative of valeric acid. Valerian also contains isovaltrate, which has been shown to be an inverse agonist for adenosine A receptor sites. This action likely does not contribute to the herb's possible sedative effects, which would be expected from an agonist, rather than an inverse agonist, at this
Valerian (herb) green herb being bruised and applied to the head taketh away pain and pricking thereof." The name of the herb is derived from the personal name "Valeria" and the Latin verb "valere" (to be strong, healthy). Other names used for this plant include garden valerian (to distinguish it from other "Valeriana" species), garden heliotrope (although not related to "Heliotropium"), setwall and all-heal (which is also used for plants in the genus "Stachys"). Red valerian, often grown in gardens, is also sometimes referred to as "valerian", but is a different species ("Centranthus ruber"), from the same family but not very closely