Anzitor 40 mg is a prescription medication containing Atorvastatin Calcium, a member of the statin class of drugs. It is used to manage high cholesterol levels and reduce the risk of cardiovascular diseases. Anzitor 40 mg works by inhibiting the enzyme HMG-CoA reductase, which plays a crucial role in the production of cholesterol in the liver. This leads to decreased levels of low-density lipoprotein (LDL) cholesterol and triglycerides, and a modest increase in high-density lipoprotein (HDL) cholesterol.