Lipitor is a medication used to lower cholesterol levels and reduce the risk of heart disease. It is not indicated for improving mobility. Therefore, there is no specific timeline for Lipitor to improve mobility [2].

Lipitor's active ingredient is atorvastatin, which works by blocking an enzyme that the body needs to produce cholesterol. By reducing the amount of cholesterol in the blood, Lipitor can help prevent the buildup of plaque in the arteries and reduce the risk of heart disease [3].

According to the drug patent watch website, the patent for Lipitor expired in 2011, which means that generic versions of the drug are now available [1].

A study published in the Journal of the American College of Cardiology found that atorvastatin therapy can improve endothelial function, which is a marker of vascular health. The study also found that the benefits of atorvastatin therapy on endothelial function were seen within two weeks of starting treatment [2].

In summary, Lipitor is not indicated for improving mobility. The drug works by reducing cholesterol levels and reducing the risk of heart disease. The benefits of atorvastatin therapy on endothelial function can be seen within two weeks of starting treatment, according to a study published in the Journal of the American College of Cardiology [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2949584/
[3] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details