Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood [1]. According to a study conducted by Pfizer, adding Lipitor early to effective blood pressure treatment provided a significant reduction in heart attacks or deaths from heart attacks over five years [2]. However, there is no direct evidence that Lipitor affects the effectiveness of blood pressure medication.

It is important to note that Lipitor has some potential side effects, including muscle pain, weakness, and tenderness, which can be severe in some cases [3]. It is recommended to consult with a healthcare provider before taking Lipitor or any other medication to ensure that it is safe and effective for an individual's specific health condition and medical history.

In conclusion, while Lipitor has been shown to be effective in reducing the risk of heart attacks, there is no direct evidence that it affects the effectiveness of blood pressure medication. However, individuals should be aware of the potential side effects of Lipitor and consult with a healthcare provider before taking it or any other medication [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] 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
[3] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects