The use of expectorants.
D000402:Airway Obstruction / Q000188:drug therapy; D001249:Asthma / Q000188:drug therapy; D001987:Bronchiectasis / Q000188:drug therapy; D001991:Bronchitis / Q000188:drug therapy; D005100:Expectorants / Q000627:therapeutic use*; D006801:Humans; D007827:Laryngitis / Q000188:drug therapy; D008173:Lung Diseases, Obstructive / Q000188:drug therapy; D011014:Pneumonia / Q000188:drug therapy; D012140:Respiratory Tract Diseases / Q000188:drug therapy*
D005100:Expectorants