After reviewing the sources provided, there is no evidence to suggest that stretching affects the effectiveness of Lipitor. Lipitor is a brand name for the drug atorvastatin, which is a medication used to lower cholesterol levels in the blood [1]. According to the Drug Patent Watch website, Lipitor is a widely prescribed drug and has been on the market since 1996 [1].

The article published in the National Center for Biotechnology Information (NCBI) explains that atorvastatin works by inhibiting an enzyme that produces cholesterol in the liver, which in turn reduces the amount of cholesterol in the blood [2]. The study also notes that there are several factors that can affect the effectiveness of atorvastatin, including genetics, diet, and lifestyle factors such as smoking and physical activity [2].

The article published in the American Heart Association journal discusses the benefits of exercise in reducing cardiovascular disease risk factors, including high cholesterol levels [3]. The study notes that regular exercise can help to improve cholesterol levels, blood pressure, and overall cardiovascular health [3]. However, there is no mention of stretching specifically affecting the effectiveness of Lipitor or atorvastatin in this study.

In conclusion, there is no evidence to suggest that stretching affects the effectiveness of Lipitor or atorvastatin. While regular exercise can help to improve cholesterol levels and overall cardiovascular health, there is no indication that stretching specifically has any impact on the effectiveness of this medication. It is important to follow the prescribed dosage and instructions for any medication, including Lipitor, and to discuss any concerns or questions with a healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/
[3] https://www.ahajournals.org/doi/full/10.1161/CIRCRESAHA.116.308537