Lipitor is a prescription medication used to treat high cholesterol levels. According to the Centers for Disease Control and Prevention (CDC), statins like Lipitor are effective in lowering LDL cholesterol levels by 20-60% [2]. The Mayo Clinic also confirms that statins are effective in reducing LDL cholesterol levels and improving overall cholesterol levels [3]. However, it is important to note that individual results may vary, and a combination of lifestyle changes and medication may be necessary to achieve optimal cholesterol levels [2]. It is recommended to consult with a healthcare provider to determine the best treatment plan for individual needs [2][3].

Sources:
[2] https://www.cdc.gov/cholesterol/treating_cholesterol.htm
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statins/art-20045772