Also known as pentoxifylline citrate tablets, this drug is a non-addictive, central cough suppressant that selectively inhibits the cough center and also has a local anesthetic effect. The drug can be used for dry cough and absence of sputum related diseases such as acute bronchitis, acute exacerbation of chronic bronchitis, acute exacerbation of chronic obstructive pulmonary disease, emphysema, interstitial pneumonia, pulmonary fibrosis, bronchopulmonary carcinoma, bronchoalveolar carcinoma and other cough symptoms. It should be noted that occasional headache, dizziness, nausea, etc. may occur during the administration of the drug.