Chemotherapy is also known as chemotherapy, and chemotherapy is usually given as an infusion, or intravenous chemotherapy. However, there are also oral chemotherapy drugs, such as Tegretol or Capecitabine. Oral chemotherapy can be used in conjunction with intravenous chemotherapy or alone. Intravenous chemotherapy may be more effective if the patient is physically able to tolerate it. Of course, chemotherapy can also produce side effects, such as nausea, vomiting, and myelosuppressive reactions such as a drop in white blood cells and platelets, and in some cases, allergic reactions. Therefore, it is necessary to check the blood routine, liver and kidney function before chemotherapy. If there is a large drop in white blood cells and a decrease in platelets, these conditions do not meet the conditions for chemotherapy and chemotherapy needs to be postponed. In the course of chemotherapy, it is also necessary to apply antiemetic and reaction-reducing drugs.