Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the body. According to [2], Lipitor can cause side effects such as muscle pain, weakness, and tenderness, which can be severe in some cases. It can also cause liver damage, although this is rare. Additionally, [3] reports that some people may experience gastrointestinal problems such as diarrhea, constipation, and nausea.

When it comes to potential side effects of combining Lipitor with blood pressure medications, there are a few things to consider. According to [1], there are no known drug interactions between Lipitor and most blood pressure medications. However, certain blood pressure medications, such as diltiazem and verapamil, can increase the levels of Lipitor in the body, which may increase the risk of side effects.

It is important to note that everyone's body reacts differently to medications, so it is possible for someone to experience side effects that are not commonly reported. If you are taking Lipitor and blood pressure medication and are concerned about potential side effects, it is recommended that you speak with your doctor.

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