Lipitor is the trade name of atorvastatin, which can be taken at any time of the day, and the dosing time is not affected by diet. Atorvastatin is a drug that inhibits cholesterol synthesis, and its main indication is hypercholesterolemia. Atorvastatin has a stabilizing effect on arterial plaque, and can be used in the treatment of coronary heart disease and cerebral infarction, and it is a long-lasting lipid-lowering drug that can be taken at any time of the day and is not affected by diet. Atorvastatin mainly inhibits cholesterol synthesizing enzyme, some adverse reactions may occur during drug taking, such as nausea, vomiting, muscle pain, transaminase elevation, etc. It is forbidden for patients who are allergic to the drug components, with unexplained liver enzyme elevation, or with severe hepatic function impairment. When taking atorvastatin clinically, use the drug under the guidance of a physician and pay attention to the adverse reactions of the drug.