The role and efficacy of Ositinib is to inhibit tumor growth and destroy tumor cells. Ositinib is a kind of anti-tumor targeted drug, which is a highly efficient selective growth factor receptor EGFR inhibitor, and has good anti-tumor therapeutic effect on non-small cell lung cancer cell lines carrying EGFR mutation, and is mainly used in the treatment of lung cancer and other diseases, especially for the treatment of locally advanced or metastatic non-small cell lung cancer, which belongs to the first-line therapeutic drugs. Ositinib must be taken under doctor’s guidance, this product has certain side effects, nausea, vomiting and other adverse reactions may occur after taking the drug, if the adverse reactions are obvious, consult the doctor in time, and stop using the drug if necessary. Hypersensitivity to the active ingredient or any excipients. This product should not be taken with St. John’s wort.