title: The expectorant effect of glyceryl guaiacolate in patients with chronic bronchitis. A controlled in vitro and in vivo study.
mesh_terms: D001991:Bronchitis / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D004548:Elasticity; D006140:Guaifenesin / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D010919:Placebos; D013183:Sputum; D014783:Viscosity; D014867:Water
chemical_list: D010919:Placebos; D014867:Water; D006140:Guaifenesin