Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels and reduce the risk of heart disease [1]. However, it is not commonly used for improving flexibility.

While Lipitor is generally considered safe, there are potential side effects that may occur with its use. The most common side effects of Lipitor include muscle pain, weakness, and tenderness, which can sometimes lead to a more serious condition called rhabdomyolysis [2]. Other potential side effects include headache, nausea, diarrhea, and liver problems [3].

It is important to note that the risk of side effects may be higher in certain populations, such as those with liver or kidney problems, and those taking certain medications that interact with Lipitor [3]. Therefore, it is important to discuss the risks and benefits of Lipitor with a healthcare provider before starting the medication.

In conclusion, while Lipitor may not be commonly used for improving flexibility, it is important to be aware of the potential side effects associated with its use. As with any medication, it is important to discuss the risks and benefits with a healthcare provider before starting treatment.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://digitalcommons.wku.edu/ijesab/vol12/iss1/33/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/