This study is an open label pilot study designed to assess the safety and efficacy of pravastatin on patients with active Crohn's disease. Patients enrolled in the study will be given pravastatin 80mg daily for a total of six weeks. The primary endpoint will be reduction in clinical disease activity, as measured by the Harvey-Bradshaw Index (HBI). Patients will also be assessed for biochemical markers of inflammation before and at completion of the study to assess the impact of pravastatin on these markers.