Certain drugs that have been used successfully in other cancers are now being used to treat some breast cancers. For example, some women take the chemotherapy drug paclitaxel in combination with the drugs cyclophosphamide and doxorubicin to help kill tumors that have spread to other parts of the body. This mix of drugs may increase the length of time you will live, or the length of time you will live without cancer.  In addition, certain drugs like Herceptin® and Tykerb® taken in combination with chemotherapy, can help women with specific genetic breast cancer mutations better than chemotherapy alone.