The ingredient of Lipitor is atorvastatin, and the atorvastatin of Maxim can be exchanged with Lipitor. Atorvastatin’s main function is to inhibit cholesterol synthesis, can effectively reduce the level of cholesterol in the body, clinically there are many manufacturers of atorvastatin, as long as the drug meets the national standard, has the same therapeutic efficacy, atorvastatin produced by different manufacturers can be exchanged for each other, the price of different manufacturers may have high and low, to consider the patient’s ability to afford. The main indication for atorvastatin is hypercholesterolemia, and it can also be used in the treatment of ischemic cardiovascular and cerebrovascular diseases. The adverse reactions of the drug include nausea, vomiting, muscle aches, joint pains, and elevated transaminases, etc. It is contraindicated for patients with allergy to the drug components, unexplained liver enzyme elevation, and severe hepatic function impairment. When choosing atorvastatin clinically, use the drug under the guidance of a physician.