Breast chemotherapy how long can excrete the poison is individual differences, different chemotherapy drugs, different patients metabolism time is not the same, if the side effects of chemotherapy drugs completely disappeared, at least, it will take about half a year. If the patient is relatively young metabolism faster, it may take 2 to 3 months to metabolize, older, the metabolism is slower, in addition to poor renal function of the patient will also be slower, it will take about six months. Chemotherapy drugs, while helping the patient to remove the lesions, will have an effect on the normal cells, which will result in side effects. While most drugs can be metabolized in two major parts within two days, the side effects of the drugs may last for a longer period of time. As chemotherapy is a systemic treatment, it may cause damage to the patient’s kidney function and cannot be relieved within a short period of time. It is recommended that after the use of chemotherapy drugs, you can try to drink as much water as possible in daily life, and the diet should be nutritious at the same time with the complementary, auxiliary drugs to maintain a good nutritional status, enhance the body’s resistance.