title: A comparative study of Excedrin P.M. and placebo.
mesh_terms: D000082:Acetaminophen / Q000009:adverse effects / Q000494:pharmacology*; D000328:Adult; D000368:Aged; D000700:Analgesics / Q000494:pharmacology; D001241:Aspirin / Q000009:adverse effects / Q000494:pharmacology*; D002986:Clinical Trials as Topic; D005260:Female; D006634:Histamine H1 Antagonists / Q000009:adverse effects / Q000494:pharmacology*; D006801:Humans; D006993:Hypnotics and Sedatives / Q000009:adverse effects / Q000494:pharmacology*; D008297:Male; D008875:Middle Aged; D004366:Nonprescription Drugs / Q000009:adverse effects / Q000494:pharmacology*; D010919:Placebos; D011725:Pyridines / Q000009:adverse effects / Q000494:pharmacology*; D012457:Salicylamides / Q000009:adverse effects / Q000494:pharmacology*; D012890:Sleep / Q000187:drug effects*; D013223:Statistics as Topic; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D000700:Analgesics; D006634:Histamine H1 Antagonists; D006993:Hypnotics and Sedatives; D004366:Nonprescription Drugs; D010919:Placebos; D011725:Pyridines; D012457:Salicylamides; D000082:Acetaminophen; D001241:Aspirin