According to DrugPatentWatch.com, Lipitor (atorvastatin) is a medication used to treat high cholesterol levels, specifically low-density lipoprotein (LDL) cholesterol [1]. The drug works by reducing the production of cholesterol in the body, which in turn helps lower LDL cholesterol levels.

In clinical trials, Lipitor has been shown to effectively lower LDL cholesterol levels. According to the National Library of Medicine, Lipitor reduced LDL cholesterol levels by an average of 30% to 60% in clinical trials [2]. The exact amount of reduction can vary depending on the individual's initial LDL cholesterol level, the dosage of Lipitor, and other factors such as lifestyle changes.

It is important to note that Lipitor is most effective when used in conjunction with a heart-healthy lifestyle, including a healthy diet, regular exercise, and avoiding tobacco use [3]. It is also important to follow the dosage prescribed by a healthcare provider and to have regular cholesterol checks to monitor progress.

In summary, Lipitor has been shown to effectively lower LDL cholesterol levels by an average of 30% to 60% in clinical trials. However, the exact amount of reduction can vary depending on individual factors, and Lipitor is most effective when used in conjunction with a heart-healthy lifestyle.

Sources:

* [1] DrugPatentWatch.com, Lipitor (Atorvastatin) Drug Profile, <https://www.drugpatentwatch.com/drugs/lipitor>.
* [2] National Library of Medicine, Atorvastatin, <https://medlineplus.gov/druginfo/meds/a601262.html>.
* [3] Mayo Clinic, High cholesterol, <https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/diagnosis-treatment/drc-20350844>.