Valerian (herb) nervous system depression, they should not be used with other depressants, such as ethanol, benzodiazepines, barbiturates, opiates, kava, or antihistamine drugs. Moreover, non-pregnant adult human hepatotoxicity has been associated with short-term use (i.e., a few days to several months) of herbal preparations containing valerian and "Scutellaria" (commonly called skullcap). As an unregulated product, the concentration, contents, and potential contaminants in valerian preparations cannot be easily determined. Because of this uncertainty and the potential for toxicity in the fetus and hepatotoxicity in the mother, valerian use is discouraged during pregnancy. Valerian root is a cat attractant in a way similar to
Valerian and the City of a Thousand Planets featured the Beatles song "Because", which marked the first time a Beatles master recording had been featured in a non-Beatles film advertisement. Industrial Light and Magic, Weta Digital and Rodeo FX did the visuals for the movie. Scott Stokdyk was the main supervisor for the effects. The first teaser for "Valerian" was released on 10 November 2016. The teaser depicts Marmakas, an Entertainer (Bubble, identified as "Glamopod" in the film), Bagoulins, and Shingouz (known as "Doghan Daguis" in the film), who all appear in "Ambassador of the Shadows". A special exclusive preview of "Valerian" was shown prior to the Fathom