Itchy throat, cough and white foamy sputum are often associated with upper respiratory tract infections. When an infection occurs in the upper respiratory tract, there is congestion and edema at the site of inflammation, and a large amount of inflammatory exudate is secreted, which stimulates eosinophils, basophils, or phagocytes in the body to gather at the site of inflammation and engulf foreign viruses or bacteria. In the case of viral infections, eosinophils tend to gather at the inflammatory site and mix with inflammatory exudates to form white foamy sputum. This time also irritates the throat, resulting in itching and coughing. The use of antiviral Chinese anti-inflammatory drugs is often more effective. It is recommended to take Pudilan Anti-inflammatory Oral Liquid or Blue Scutellaria Oral Liquid for anti-inflammatory treatment. If there is a lot of phlegm, it is recommended to use cough and phlegm-relieving drugs, such as Ambrotero Oral Solution or Lung Power Cough Compound, which are more effective.