Generic Lipitor (Atorvastatin) is a meidical solution that is used along with diet, exercise, and weight-loss programs to lower the risk of heart attack and stroke and to lower the chance that heart surgery will be needed in people who have heart disease or who are at risk of developing heart disease. Lipitor is also used to decrease the high cholesterol level and other fatty substances in the blood. This will lower the risk of heart attack, stroke and other heart diseases because when there are high levels of cholesterol and other fats in the blood, these substances may build up along the walls of the blood vessels and lower or block blood flow. Generic Lipitor is in a class of medications that are called HMG-CoA reductase inhibitors. HMG-CoA reductase inhibitors belong to a group of medications that are mainly used to lower or block cholesterol (a fat-like substance) that can stick to the inside of blood vessels, resulting in heart disease, and strokes. This meidical solution effects by blocking or slowing the production of cholesterol in the organism.