Cerivastatin sodium is primarily used as a lipid-lowering agent to manage and treat hypercholesterolemia. It works by inhibiting the enzyme HMG-CoA reductase, which plays a crucial role in cholesterol production in the liver. This action helps reduce levels of low-density lipoprotein (LDL) cholesterol, often referred to as "bad" cholesterol, while also modestly increasing high-density lipoprotein (HDL) cholesterol, known as "good" cholesterol. By lowering cholesterol levels, it significantly reduces the risk of cardiovascular diseases such as heart attacks and strokes. It is typically prescribed as part of a comprehensive treatment plan that includes dietary changes, exercise, and other lifestyle modifications. However, its use has been discontinued in many countries due to the risk of severe side effects, particularly rhabdomyolysis, a condition involving the breakdown of muscle tissue.