Lipitor, also known as atorvastatin, is a medication that is primarily used to lower cholesterol levels in the blood. While it is not primarily used to lower blood pressure, it may have some secondary effects on blood pressure. However, the time it takes for Lipitor to lower blood pressure may vary depending on the individual and other factors.

According to the sources provided, there is limited information on the specific timeline for Lipitor to lower blood pressure. The drug's primary function is to reduce cholesterol levels in the blood [1]. While some studies have suggested that Lipitor may have some secondary effects on blood pressure, the evidence is not conclusive [2].

Moreover, Medical News Today reports that Lipitor's side effects can include muscle pain, weakness, and liver damage, among other things [2]. It is important to note that Lipitor should only be taken under the guidance of a healthcare professional, who can monitor the individual's blood pressure and overall health.

In conclusion, while Lipitor may have some secondary effects on blood pressure, there is limited information on the specific timeline for this to occur. It is important to note that Lipitor is primarily used to lower cholesterol levels and should only be taken under the guidance of a healthcare professional [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects
[3] https://pubmed.ncbi.nlm.nih.gov/21881597/