The generic name of Kemena is Eketinib Hydrochloride Tablets. Due to the individual difference situation, Eketinib may become resistant after about 10 to 12 months of continuous use, but some patients may use the drug for 1 to 2 years before becoming resistant. For most patients, drug resistance may occur about 10 to 12 months after using Ectinib Hydrochloride Tablets, which means that the effect of the current chemotherapy drugs is relatively poor, and if it continues to be used, it cannot inhibit the cancer cells in the body, and the remaining cells may escape from the killing of the chemotherapy drugs, and are prone to genetic mutation, which will also have certain impact on the control of the disease. However, some people will be resistant to chemotherapy only after about 1~2 years of continuous use, which indicates that patients are more sensitive to chemotherapy drugs and can kill cancer cells in large quantities, which has a clearer effect on the control of the disease. Therefore, in order to achieve a relatively better prognosis, if there is a need to use or change drugs, they should be applied under the guidance of physicians, and if there is any discomfort during the recovery process, it is recommended to go to the hospital for consultation and treatment in time.