Lipitor, generic name atorvastatin calcium tablets, is an HMG-CoA reductase inhibitor. It is mainly used to lower cholesterol in the body and treat hypercholesterolemia. Generally in the treatment of hypercholesterolemia once a day for two weeks to see significant results, and four weeks to achieve maximum efficacy in lowering cholesterol, according to the level of low-density cholesterol in blood lipids, adjust the dose of the drug, reduce or stop the drug. It can also be used to prevent and treat cerebral infarction, coronary heart disease, diabetic vasculopathy and other diseases of arterial plaque formation, the effect is to lower lipids and stabilize plaque, long-term use can reduce the size of plaque, improve blood supply, reduce the risk of cerebral infarction and cardiovascular accidents, long-term use should monitor blood lipids and liver function.