title: L-tryptophan + oxprenolol: a new approach to the treatment of insomnia.
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010096:Oxprenolol / Q000627:therapeutic use*; D007319:Sleep Initiation and Maintenance Disorders / Q000188:drug therapy*; D012894:Sleep Stages / Q000187:drug effects; D014364:Tryptophan / Q000627:therapeutic use*; D014851:Wakefulness / Q000187:drug effects
chemical_list: D010096:Oxprenolol; D014364:Tryptophan