title: [Is tryptophan a biological hypnotic?].
mesh_terms: D000328:Adult; D000368:Aged; D006801:Humans; D006993:Hypnotics and Sedatives; D008875:Middle Aged; D007319:Sleep Initiation and Maintenance Disorders / Q000188:drug therapy*; D012894:Sleep Stages / Q000187:drug effects*; D014364:Tryptophan / Q000627:therapeutic use*
chemical_list: D006993:Hypnotics and Sedatives; D014364:Tryptophan
vernacular_title: Ist Tryptophan ein "biologisches Schlafmittel".