Rosuvastatin is a medication used to lower high cholesterol levels in the blood. It belongs to a class of drugs called HMG-CoA reductase inhibitors, also known as statins. Rosuvastatin works by blocking the enzyme that produces cholesterol in the liver, thereby reducing the amount of cholesterol that circulates in the blood. It is typically taken orally, usually once daily, with or without food. Rosuvastatin is often prescribed along with a healthy diet and exercise to reduce the risk of heart disease, stroke, and other cardiovascular conditions. It may also be used to treat other medical conditions, as determined by a healthcare provider.