title: Antibiotics for cough and purulent sputum.
mesh_terms: D002986:Clinical Trials as Topic; D003371:Cough / Q000188:drug therapy*; D004318:Doxycycline / Q000627:therapeutic use*; D006801:Humans; D012140:Respiratory Tract Diseases / Q000188:drug therapy; D013183:Sputum
chemical_list: D004318:Doxycycline