Lipitor and stretching are not substitutes for each other. Lipitor is a medication used to lower cholesterol levels in the blood [1]. Stretching, on the other hand, is a physical activity that helps improve flexibility, range of motion, and reduce muscle tension [2].

While Lipitor can cause muscle pain and weakness in some people [1], stretching can help alleviate these symptoms by improving blood flow and reducing muscle tension [2]. However, it is important to note that stretching alone may not be enough to lower cholesterol levels in the blood, and medication may be necessary in some cases [1].

In summary, Lipitor and stretching serve different purposes and are not substitutes for each other. Lipitor is a medication used to lower cholesterol levels in the blood, while stretching is a physical activity that helps improve flexibility and reduce muscle tension.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.health.harvard.edu/pain/managing-statin-muscle-pain
[3] https://www.reuters.com/article/autos-resin/dupont-dow-to-help-global-automakers-avoid-output-crunch-idUSL2E8FK0IL20120420