title: Effects of L-tryptophan (a natural sedative) on human sleep.
mesh_terms: D006916:5-Hydroxytryptophan / Q000378:metabolism; D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000652:urine; D008297:Male; D008875:Middle Aged; D010649:Phenylalanine / Q000494:pharmacology; D010919:Placebos; D012701:Serotonin / Q000378:metabolism; D012737:Sex Factors; D012890:Sleep / Q000187:drug effects*; D007319:Sleep Initiation and Maintenance Disorders / Q000188:drug therapy; D012895:Sleep, REM / Q000187:drug effects*; D014364:Tryptophan / Q000037:antagonists & inhibitors / Q000378:metabolism / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D010919:Placebos; D012701:Serotonin; D010649:Phenylalanine; D006897:Hydroxyindoleacetic Acid; D014364:Tryptophan; D006916:5-Hydroxytryptophan