Chemotherapy for breast cancer uses powerful drugs to target and destroy breast cancer cells. Chemotherapy for breast cancer frequently is used with other treatments, such as surgery, radiation or hormonal therapy. Combining chemotherapy for breast cancer with other treatments may increase the chance of a cure or decrease the risk of the cancer returning.If the cancer has recurred or spread, chemotherapy for breast cancer may control the cancer to help you live longer. Or it can help ease symptoms the cancer is causing.But chemotherapy for breast cancer also carries a risk of side effects; some temporary and mild, others more serious or permanent. Your doctor can help you decide whether chemotherapy for breast cancer is a good choice for you.