Chemotherapy is the use of drugs to destroy cancer cells usually by ending the cancer cells ability to grow and divide. It may be given before surgery to shrink a large tumor, make surgery easier, and reduce the risk of recurrence, called neoadjuvant chemotherapy. It may also be given after surgery to reduce the risk of recurrence, called adjuvant chemotherapy. Chemotherapy for breast cancer is used in addition to other treatments such as surgery, radiation or hormone therapy and it may increase the chance of a cure, decrease the risk of the cancer returning, alleviate symptoms from the cancer or help people with cancer live longer with a better quality of life. A combination of two or more medicines will be used as chemotherapy treatment for breast cancer.