Lipitor, also known as atorvastatin, is a medication that belongs to the class of drugs known as statins. According to the sources provided, Lipitor can significantly lower cholesterol levels in patients. Lipitor works by blocking an enzyme that is necessary for the liver to produce cholesterol [2]. This medication is prescribed to people who have high levels of low-density lipoprotein (LDL) cholesterol, which is commonly referred to as "bad" cholesterol.

According to the Mayo Clinic, statins like Lipitor can reduce LDL cholesterol levels by 20-50% [3]. The effectiveness of Lipitor in lowering cholesterol levels varies from person to person, and it depends on factors such as the person's age, weight, and overall health. Additionally, the dosage of Lipitor prescribed by a doctor will also impact how much cholesterol levels are lowered.

It is important to note that while Lipitor is effective in lowering cholesterol levels, it is not a cure for high cholesterol. Patients taking Lipitor must continue to make lifestyle changes such as eating a healthy diet, exercising regularly, and quitting smoking to maintain healthy cholesterol levels [2].

In conclusion, Lipitor can significantly lower cholesterol levels in patients, particularly LDL cholesterol. However, the effectiveness of Lipitor varies from person to person, and lifestyle changes are still necessary to maintain healthy cholesterol levels. Patients should consult with their doctor to determine the appropriate dosage of Lipitor and to discuss any potential side effects.

Sources:
[2] https://www.webmd.com/cholesterol-management/features/when-your-doctor-orders-cholesterol-lowering-medications
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statins/art-20045772