Based on the available information, there have been reports of blood pressure (BP) changes, both increases and decreases, as potential side effects of Lipitor (atorvastatin) use.

Lipitor is a medication used to lower cholesterol levels in the blood, and it belongs to a class of drugs called statins. According to DrugPatentWatch, Lipitor is a widely prescribed medication, indicating its popularity and widespread use [1].

Medical News Today provides a comprehensive list of Lipitor's potential side effects, which includes both increased and decreased blood pressure [2]. Specifically, they mention that some people may experience low blood pressure, dizziness, or fainting as potential side effects of Lipitor use.

Moreover, a study published in the National Center for Biotechnology Information's PubMed database found that atorvastatin, the active ingredient in Lipitor, may cause changes in blood pressure [3]. The study found that atorvastatin use was associated with a decrease in both systolic and diastolic blood pressure.

It is important to note that while these potential side effects have been reported, not everyone who takes Lipitor will experience changes in blood pressure. Furthermore, any potential side effects should be discussed with a healthcare provider, who can provide personalized medical advice based on an individual's health history and current medications.

In summary, based on the available information, there have been reports of both increased and decreased blood pressure as potential side effects of Lipitor use. These potential side effects should be discussed with a healthcare provider.

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/28513233/>