According to DrugPatentWatch.com, Lipitor is a medication used to treat high cholesterol levels [1]. The active ingredient in Lipitor is atorvastatin, which is a type of drug known as a statin [1].

Statins work by reducing the amount of cholesterol produced by the liver [2]. This helps to lower the level of cholesterol in the blood, which can help prevent heart disease and stroke [2].

In terms of the specific amount that Lipitor can lower cholesterol, clinical trials have shown that Lipitor can reduce LDL (or "bad") cholesterol by 25% to 60% [3]. The exact amount of cholesterol reduction will depend on a number of factors, including the dose of Lipitor prescribed, the individual's starting cholesterol level, and other health conditions [3].

It's important to note that Lipitor is just one tool in the management of high cholesterol, and it should be used in conjunction with a heart-healthy lifestyle, including a healthy diet, regular exercise, and avoiding tobacco and excessive alcohol use [2].

In summary, Lipitor is a medication used to treat high cholesterol, and it has been shown to reduce LDL cholesterol by 25% to 60%. However, the exact amount of cholesterol reduction will depend on various factors, and Lipitor should be used as part of a comprehensive approach to managing high cholesterol.

Sources:

1. DrugPatentWatch.com. (n.d.). Lipitor. Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>
2. Mayo Clinic. (2021, April 16). High cholesterol. Retrieved from <https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/symptoms-causes/syc-20350800>
3. Pfizer. (n.d.). Lipitor (atorvastatin calcium) tablets, for oral use. Retrieved from <https://www.pfizer.com/products/product-detail/lipitor>