Dopafil is the brand name of the drug and the commonly used drug name is Docetaxel Injection. The side effects of the drug disappear in about 2 to 4 weeks, the exact time of disappearance is related to the application time of the chemotherapy drug, the dose and the patient’s physical condition, and there is no clear conclusion. Docetaxel Injection belongs to the antitumor drugs, which can be used in combination with other drugs for the treatment of breast cancer, non-small cell lung cancer and other malignant tumors. After taking the drug the patient’s body will have obvious side effects, such as bone marrow suppression, gastrointestinal symptoms and so on. Generally, the bone marrow suppression will disappear in about 2 weeks after chemotherapy, and most of the gastrointestinal adverse reactions are in about 1 week. If the body experiences more serious adverse reactions during treatment, it is necessary to stop using the drug and go to the hospital for medical treatment.