Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body. According to the sources provided, the time it takes to see results with Lipitor may vary depending on the individual and their specific condition.

The drug typically starts to work within two weeks, but it may take up to four weeks to see significant changes in cholesterol levels [2]. It is important to note that Lipitor is not a quick fix and should be taken regularly as prescribed by a doctor to achieve optimal results [3].

It is also important to note that Lipitor may not work for everyone, and some individuals may need to try different medications or combinations of medications to effectively manage their cholesterol levels [2].

In conclusion, the time it takes to see results with Lipitor may vary from person to person, but typically it starts to work within two weeks and significant changes may take up to four weeks. It is important to take Lipitor regularly as prescribed by a doctor and to be patient with the process of managing cholesterol levels.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.webmd.com/cholesterol-management/features/when-your-doctor-orders-cholesterol-lowering-medications
[3] https://www.nhs.uk/medicines/atorvastatin/common-questions-about-atorvastatin/