According to the sources provided, there is no evidence to suggest that stretching can completely reverse the effects of Lipitor. Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood [1]. However, one of the side effects of this medication is muscle pain, which can sometimes be severe enough to interfere with daily activities [2].

The article from Harvard Health Publishing suggests that stretching and other exercises may help to alleviate muscle pain caused by statins, including Lipitor. However, the article notes that there is no definitive evidence to support this claim, and that different people may respond differently to exercise [2].

Similarly, the study published in the US National Library of Medicine found that exercise interventions, including stretching, may help to reduce muscle pain in patients taking statins. However, the study also noted that further research is needed to determine the optimal exercise program for managing statin-induced muscle pain [3].

In conclusion, while stretching and exercise may help to alleviate muscle pain caused by Lipitor, there is no evidence to suggest that it can completely reverse the effects of the medication. Patients who are experiencing muscle pain while taking Lipitor should speak to their healthcare provider to determine the best course of action for managing their symptoms [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.health.harvard.edu/pain/managing-statin-muscle-pain
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2772998/