Double blind test with Baltix.
D000433:1-Propanol / Q000627:therapeutic use*; D000328:Adult; D000996:Antitussive Agents / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010919:Placebos
D000996:Antitussive Agents; D010919:Placebos; D000433:1-Propanol