According to the information provided, Lipitor is a medication that is used to lower cholesterol levels. The exact amount of cholesterol reduction that Lipitor provides can vary depending on several factors, such as the dosage of the medication and the individual's response to treatment.

The first source, <https://www.drugpatentwatch.com/p/tradename/LIPITOR>, does not provide specific information on the amount of cholesterol reduction that Lipitor provides.

The second source, <https://www.ahajournals.org/doi/full/10.1161/01.atv.15.5.678>, states that Lipitor, also known as atorvastatin, is a member of a class of drugs called statins, which are commonly used to treat high cholesterol. The study found that atorvastatin reduced LDL cholesterol by approximately 39-60% in patients with hypercholesterolemia.

The third source, <https://www.medicalnewstoday.com/articles/248136>, also states that Lipitor is a statin that is used to lower cholesterol levels. The article states that Lipitor can lower LDL cholesterol by 25-60%, depending on the dosage and the individual's response to treatment.

In summary, based on the information provided, Lipitor can lower LDL cholesterol by approximately 39-60%, depending on the dosage and the individual's response to treatment.

Sources:

* <https://www.drugpatentwatch.com/p/tradename/LIPITOR>
* <https://www.ahajournals.org/doi/full/10.1161/01.atv.15.5.678>
* <https://www.medicalnewstoday.com/articles/248136>