Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the body. It is not a blood pressure medication [1]. However, it is important to note that some people who have high blood pressure may also have high cholesterol levels, and in these cases, a doctor may prescribe both a blood pressure medication and a cholesterol-lowering medication like Lipitor [2].

According to Medical News Today, Lipitor can cause side effects such as muscle pain, weakness, and tenderness, as well as liver problems and digestive issues [2]. However, there is no evidence to suggest that Lipitor can directly affect the effectiveness of blood pressure medication.

In fact, a study conducted by Pfizer found that adding Lipitor to an effective blood pressure treatment plan can actually reduce the risk of heart attacks or deaths from heart attacks over a five-year period [3]. This study suggests that Lipitor may have a positive effect on heart health when used in conjunction with blood pressure medication, rather than negatively affecting its effectiveness.

In summary, Lipitor is not a blood pressure medication and there is no evidence to suggest that it can directly affect the effectiveness of blood pressure medication. However, it is important to be aware of potential side effects when taking Lipitor and to discuss any concerns with a healthcare provider. Additionally, adding Lipitor to an effective blood pressure treatment plan may provide additional benefits for heart health [1][2][3].

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