Atorvastatin is a medication used to lower high levels of cholesterol and triglycerides in the blood. It belongs to a class of drugs called statins, which work by blocking an enzyme in the liver that produces cholesterol. By reducing the amount of cholesterol in the blood, atorvastatin can help prevent complications such as heart disease, stroke, and heart attacks. Atorvastatin is usually taken once a day and may be prescribed in doses ranging from 10 to 80 milligrams, depending on the patient's needs and medical history. It is available under various brand names, including Lipitor, Torvast, and Sortis.