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 low-tech humanoid race lives peacefully. They fish for pearls containing enormous amounts of energy, and use small animals to replicate them. Wreckage begins plummeting from the sky, followed by a huge spacecraft falling and causing an apocalyptic explosion. Moments before her death a young princess manages to send out a telepathic signal. Shaken, Valerian awakes. After an analysis reveals he might have received a signal from across time and space, he learns that his mission is to retrieve a "Mül converter", so-called for being able to replicate anything it eats. It is the last of its kind, and currently in