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 and the City of a Thousand Planets to never give up on his feelings for Laureline. Valerian and Laureline venture further into the infected area, realizing it is actually not toxic and contains some wrecks of antique spacecraft. They reach a large shielded hall where they find the humanoids, known as Pearls, with an unconscious Filitt. Their leader, Emperor Haban Limaï, explains that his people lived peacefully on Mül until a battle broke out in orbit between the Federation’s fleet and a faction known as "Southern Territories". The human commander, Filitt, ordered the use of two powerful fusion missiles that disabled the enemy ship but caused it