How long do chemotherapy drugs last in the body? Chemotherapy drugs are very different from the ordinary drugs we usually take. They are more powerful and are mainly used for the treatment of malignant tumors. However, chemotherapy has a huge disadvantage. The side effects are large, and the chemotherapy drugs selected for different tumor types are also different. So, how long do the chemotherapy drugs last in the body?

　　Chemotherapy drug metabolism time is inconsistent, some times are shorter, some are longer. However, because chemotherapy often requires repeated cycles, if you want the chemotherapy drugs to be completely metabolized in the body, it will take at least half a year to a year, some or even longer, and the side effects of some chemotherapy drugs are completely metabolized After that, it may continue for some time.

　　What is the need to choose chemotherapy and what plan to choose? This question is highly professional and should be determined by the oncologist according to the patient''s specific situation. In general, chemotherapy should be done in the following situations:

　　 1. Malignant tumors that are sensitive to chemotherapy and take chemotherapy as the main treatment method can be cured by standard chemotherapy. Such as small cell lung cancer, leukemia, malignant lymphoma, choriocarcinoma, germ cell malignancy, etc.

　　 2. Sensitive or relatively sensitive malignant tumors, chemotherapy before or after surgery.

　　 3. Palliative chemotherapy for advanced malignant tumors.

　　Some cancers that are sensitive to chemotherapy drugs, such as leukemia and lymphoma, chorionic epithelial cancer, and germ cell malignancies, can be cured by chemotherapy alone. This type of chemotherapy for the purpose of curing cancer is Called curative chemotherapy, most advanced cancer cells have already metastasized widely, and it is impossible to cure at this stage of technology.

　　The purpose of chemotherapy is mainly to control the development of cancer to prolong the life of patients, or to improve the quality of life of patients through chemotherapy. This chemotherapy is called palliative chemotherapy. Those who become resistant after repeated chemotherapy and who are still ineffective after replacing the chemotherapy regimen should choose other treatments.