This product is used to treat lung heat, cough and asthma. Clinically, it is mainly used to prevent and treat infectious bronchial (respiratory, renal), infectious laryngotracheitis, chronic respiratory diseases and other respiratory diseases in poultry. It manifests as cough, wheezing, murmurs in breathing, nose throwing, foamy secretions in the eyelids, dyspnea, bloodshot sputum, variegated kidneys, etc., especially suitable for respiratory diseases with liver and kidney damage, such as renal infectious bronchitis.