title: Subjective ratings of sleep quality and anxiety after placebo, drug and a food drink.
mesh_terms: D000328:Adult; D001007:Anxiety / Q000187:drug effects; D001628:Beverages; D006801:Humans; D008875:Middle Aged; D009567:Nitrazepam / Q000494:pharmacology*; D010919:Placebos; D012890:Sleep / Q000187:drug effects; D013404:Suggestion
chemical_list: D010919:Placebos; D009567:Nitrazepam