Valerian (herb) mild nervous tension and to aid sleep; EMA stated that although there is insufficient evidence from clinical studies, its effectiveness as a dried extract is considered plausible. In the United States, valerian extracts are sold as a nutritional supplement under the Dietary Supplement Health and Education Act of 1994. Oral forms are available in both standardized and unstandardized forms. Standardized products may be preferable considering the wide variation of the chemicals in the dried root, as noted above. When standardized, it is done so as a percentage of valerenic acid or valeric acid. Because the compounds in valerian produce central
Valerian and the City of a Thousand Planets saying "the vividness of this place only underscores the lifelessness of the people leading us through it ... There are 394 million stories on the City of a Thousand Planets, and Valerian’s might be the only one we’ve seen before. Still, any excuse to visit this place is one worth taking." Peter Sciretta of /Film touted the first half of "Valerian" as "unpredictable and bonkers insane", while calling the second half more formulaic and "far less exciting", though he still encouraged seeing the film in 3D "on the biggest screen possible". Ignatiy Vishnevetsky of "The A.V. Club" wrote that it