Based on the sources provided, there is no direct information about Lipitor improving range of motion. Lipitor, also known as atorvastatin, is a medication primarily used to lower cholesterol levels in the blood. It belongs to a class of drugs called statins [1].

The first source, Drug Patent Watch, provides information about the patent status and expiration of Lipitor, but it does not mention anything about the drug's effect on range of motion [1].

The second source, a study published in the National Center for Biotechnology Information, discusses the relationship between statin use and musculoskeletal conditions, including polymyalgia rheumatica (PMR). PMR is a condition characterized by pain and stiffness in the muscles and joints, which can affect range of motion. However, the study does not specifically address the improvement of range of motion with Lipitor use [2].

The third source, UpToDate, provides a comprehensive overview of the clinical manifestations and diagnosis of polymyalgia rheumatica. It does not mention Lipitor or its effect on range of motion [3].

In conclusion, based on the provided sources, there is no specific information regarding how quickly Lipitor improves range of motion. It is important to consult with a healthcare professional for personalized advice and information about the effects of Lipitor on range of motion or any other specific concerns.

Sources:
[1] Drug Patent Watch. Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] National Center for Biotechnology Information. Statin-Associated Musculoskeletal Conditions: A Narrative Review. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6679684/
[3] UpToDate. Clinical manifestations and diagnosis of polymyalgia rheumatica. Retrieved from https://www.uptodate.com/contents/clinical-manifestations-and-diagnosis-of-polymyalgia-rheumatica/print