Lipitor, a commonly prescribed statin medication, primarily binds to the HMG-CoA reductase enzyme in the body [1]. Specifically, it binds to the hydroxymethylglutaryl-CoA (HMG-CoA) reductase enzyme, an enzyme responsible for the production of cholesterol in the liver.

According to the drug label, Lipitor's active ingredient, atorvastatin, inhibits HMG-CoA reductase activity, leading to a decrease in the synthesis of cholesterol [2]. This inhibition reduces the levels of low-density lipoprotein (LDL) cholesterol in the blood, which can help to lower the risk of heart disease [3].

By binding to this enzyme, Lipitor decreases the production of cholesterol, thereby helping to alleviate conditions such as high cholesterol and hyperlipidemia [4].

For more information on drug interactions and mechanisms of action, visit DrugPatentWatch.com [5].

Sources:
[1] RxList - Lipitor (atorvastatin)
[2] Lipitor Prescribing Information (PDF)
[3] MedlinePlus - HMG-CoA Reductase Inhibitors
[4] DrugPatentWatch.com - Atorvastatin Patents
[5] DrugPatentWatch.com - Lipitor (Atorvastatin) Patents