Lipitor is used with diet changes (restriction of cholesterol and fat intake) to reduce the amount of cholesterol and certain fatty substances in your blood. The active ingredient of the drug Lipitor, Atorvastatin, is thought to lower cholesterol levels in a patient’s blood, thus reducing the chances for any kind of heart disease. Accumulation of cholesterol and fats along the walls of your arteries (a process known as atherosclerosis) decreases blood flow and, therefore, the oxygen supply to your heart, brain, and other parts of your body. Lowering your blood level of cholesterol and fats may help to prevent heart disease, angina (Chest pain), strokes, and heart attacks. Generic Lipitor Atorvastatin can effectively reduce fat levels if taken along with a fat reduction diet.