title: The hypnotic effects of codeine and secobarbital and their interaction in man.
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D002986:Clinical Trials as Topic; D003061:Codeine / Q000009:adverse effects / Q000494:pharmacology*; D004357:Drug Synergism; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010919:Placebos; D012631:Secobarbital / Q000009:adverse effects / Q000494:pharmacology*; D012890:Sleep / Q000187:drug effects*; D013223:Statistics as Topic; D011795:Surveys and Questionnaires
chemical_list: D010919:Placebos; D012631:Secobarbital; D003061:Codeine