Rosuvastatin is primarily used to lower cholesterol and triglyceride levels in the blood, helping to reduce the risk of heart disease, stroke, and other cardiovascular complications. It works by inhibiting the enzyme HMG-CoA reductase in the liver, which plays a key role in cholesterol production. It is commonly prescribed for patients with high levels of LDL cholesterol, often referred to as "bad" cholesterol, and is effective in increasing HDL cholesterol, known as "good" cholesterol. Additionally, it is used to slow the progression of atherosclerosis, a condition where plaque builds up in the arteries, by reducing the formation of fatty deposits. Rosuvastatin is also administered to individuals with inherited conditions like familial hypercholesterolemia, where cholesterol levels are excessively high. It is often part of a broader treatment plan that includes dietary changes, exercise, and lifestyle modifications to manage and improve cardiovascular health. Patients should take it strictly as prescribed by their doctor and undergo regular blood tests to monitor treatment efficacy.