title: [An expectorant].
mesh_terms: D005100:Expectorants; D006801:Humans; D009093:Mucus / Q000502:physiology; D011663:Pulmonary Surfactants / Q000502:physiology; D013183:Sputum / Q000502:physiology
chemical_list: D005100:Expectorants; D011663:Pulmonary Surfactants