Lipitor is a medication that is commonly used to lower cholesterol levels in the body. According to the sources provided, there is evidence to suggest that Lipitor can have an effect on blood pressure, but the nature of this effect is not entirely clear.

One source, Drug Patent Watch [1], lists "hypertension" as a potential side effect of Lipitor, but does not provide any further information on the extent or severity of this effect.

Another source, Medical News Today [2], notes that while Lipitor is not specifically designed to lower blood pressure, some studies have suggested that it may have a modest effect in this regard. However, the article also notes that the evidence on this topic is mixed, and that more research is needed to fully understand the relationship between Lipitor and blood pressure.

Finally, a press release from Pfizer [3] suggests that adding Lipitor to a regimen of blood pressure medication may provide significant benefits in terms of reducing the risk of heart attacks and other cardiovascular events. However, this study focused specifically on patients with hypertension, and it is not clear whether the benefits observed would be applicable to all patients taking Lipitor.

Overall, the available evidence suggests that Lipitor may have some effect on blood pressure, but the nature and extent of this effect is not well understood. Patients taking Lipitor should be aware of the potential for blood pressure changes, and should discuss any concerns or questions with their healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects
[3] https://www.pfizer.com/news/press-release/press-release-detail/adding_lipitor_early_to_effective_blood_pressure_treatment_provided_a_significant_reduction_in_heart_attacks_or_deaths_from_heart_attacks_over_five_years