Tamoxifen and Raloxifene
There are also drugs that can be prescribed to women with higher than average risk of breast cancer. Both of these drugs are selective estrogen receptor modulators (SERMs). This means that they act against (or block) estrogen (a female hormone) in some tissues of the body, but act like estrogen in others. Estrogen can fuel the growth of breast cancer cells. Both of these drugs block estrogen in breast cells, which is why they can be useful in lowering breast cancer risk. However, it is important to keep in mind that these drugs have some risks and side effects. Learn more about those here.