The effect of OXITINI is generally relatively fast, some patients will be significantly relieved of symptoms after taking the drug for 1~2 weeks. Ocitinib is a third-generation targeted agent for advanced non-small cell lung cancer, and can be used for the first-line treatment of non-small cell lung cancer in the presence of EGFR exon 19 deletion mutation and exon 21 L858R mutation, or disease progression during or after prior EGFR tyrosine kinase inhibitor treatment, and the presence of locally advanced or metastatic EGFR T790M mutation-positive confirmed by testing in adult patients with locally advanced or metastatic non-small cell lung cancer in adult patients. After using ositinib, the time for the drug to take effect varies in different patients, and in general, after 1~2 weeks of using the drug, the patients’ symptoms such as cough, chest pain, hemoptysis, dyspnea and so on will be obviously relieved. Many advanced lung cancer patients who use OXITINI for 1 month and then review the chest CT and other imaging examinations will find that the tumor of lung cancer shrinks and the cancerous pleural effusion decreases and other signs that OXITINI is effective. Please strictly follow the doctor’s prescription for medication, and do not use medication on your own.