Double-blind clinical trial of bromhexine as a mucolytic drug in chronic bronchitis.
D001991:Bronchitis / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D005100:Expectorants / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D010919:Placebos; D013147:Spirometry; D013183:Sputum; D014783:Viscosity
D005100:Expectorants; D010919:Placebos