title: Human volunteer studies of the antitussive activity of dropropizine.
mesh_terms: D000328:Adult; D000336:Aerosols; D000996:Antitussive Agents / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D003061:Codeine / Q000627:therapeutic use; D003371:Cough / Q000139:chemically induced / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010879:Piperazines / Q000627:therapeutic use*; D012907:Smoking
chemical_list: D000336:Aerosols; D000996:Antitussive Agents; D010879:Piperazines; D003061:Codeine