Atorvastatin is primarily used to lower cholesterol levels in the blood, helping to reduce the risk of heart disease, stroke, and other cardiovascular conditions. It works by inhibiting an enzyme in the liver that is responsible for producing cholesterol, thereby decreasing the amount of LDL (bad cholesterol) and triglycerides while increasing HDL (good cholesterol). This medication is often prescribed to patients with high cholesterol, familial hypercholesterolemia, or those who have a history of heart-related issues. Additionally, it may be used as part of a broader treatment plan that includes diet, exercise, and lifestyle changes to manage cholesterol effectively. Regular monitoring of liver function and cholesterol levels is typically recommended during treatment.