Lipitor is a medication used to lower high cholesterol levels in the blood and reduce the risk of heart disease. It belongs to a class of drugs called statins, which work by blocking an enzyme in the liver that produces cholesterol. According to the Mayo Clinic [2], high cholesterol can lead to the buildup of plaque in the arteries, which can increase the risk of heart attack and stroke. Therefore, Lipitor is often prescribed to people with high cholesterol levels to help reduce their risk of these cardiovascular events.

The decision to start taking Lipitor is typically made by a healthcare provider after a thorough evaluation of the patient's cholesterol levels, medical history, and overall health. According to WebMD [3], Lipitor is usually prescribed in combination with a healthy diet and exercise program to maximize its effectiveness. It is important to note that Lipitor is not a cure for high cholesterol, but rather a tool to help manage it.

The patent for Lipitor expired in 2011, which means that generic versions of the drug are now available [1]. This has made the medication more affordable and accessible to people who need it. However, as with any medication, Lipitor may cause side effects in some people. Common side effects include muscle pain, weakness, and stomach upset. In rare cases, Lipitor can cause more serious side effects, such as liver damage and muscle breakdown. Therefore, it is important to discuss the risks and benefits of Lipitor with a healthcare provider before starting treatment [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statins/art-20045772
[3] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details