This study is for subjects that have been diagnosed with prostate cancer that can be removed by surgery. The purpose of this study is to determine whether a group of drugs called statins can help to reduce the risk of prostate cancer returning after surgery. The drug used in this study is a particular type of statin called simvastatin. Simvastatin is approved by the Food and Drug Administration (FDA) to help lower cholesterol (fatty deposits in your blood) and decrease the risk of heart disease. Its use in this research study is considered investigational, and not FDA approved for the subject's cancer. Subjects can expect to be in the active participation portion of this study for about 3 months. Afterwards, the study team may contact them or their medical providers every 6 months to follow their cancer care and collect information on their current health status.