Lipitor is a brand name for atorvastatin, a medication used to lower cholesterol levels. According to Drug Patent Watch [1], Lipitor belongs to a class of drugs called statins that work by inhibiting an enzyme in the liver that produces cholesterol. Statins are not known to interact with blood pressure medications directly, but they can cause some side effects that may affect blood pressure.

One of the most common side effects of Lipitor is muscle pain and weakness [2]. This side effect is more likely to occur in people who are taking high doses of the drug or who have pre-existing muscle problems. Muscle pain and weakness can cause people to be less active, which can lead to weight gain and higher blood pressure.

However, a press release from Pfizer [3] suggests that adding Lipitor early to effective blood pressure treatment can provide a significant reduction in heart attacks or deaths from heart attacks over five years. This suggests that Lipitor can be an effective addition to blood pressure medication for people at risk of heart disease.

In conclusion, while Lipitor is not known to interact with blood pressure medication directly, it can cause side effects such as muscle pain and weakness that may indirectly affect blood pressure. However, adding Lipitor to effective blood pressure treatment may provide significant benefits for people at risk of heart disease. It is important to talk to a healthcare provider about any concerns or questions about medication interactions or side effects.

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.