Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood. While it is generally safe and effective, there are potential side effects associated with long-term use of this medication.
According to the first source , some of the most common side effects of Lipitor include muscle and joint pain, nausea, diarrhea, and constipation. In rare cases, Lipitor use has been associated with liver damage and an increased risk of developing type 2 diabetes.
The second source  notes that muscle pain and weakness are the most common side effects of statins, including Lipitor. In rare cases, these symptoms can progress to a serious condition called rhabdomyolysis, which can cause kidney damage and even death. Statins have also been associated with memory loss, confusion, and an increased risk of developing cataracts.
The third source  notes that while statins are generally well-tolerated, long-term use may increase the risk of developing certain side effects. These can include muscle damage, liver damage, and an increased risk of developing diabetes. However, the benefits of statin therapy in reducing the risk of heart attack and stroke generally outweigh the risks of these side effects.
In conclusion, while Lipitor is generally safe and effective for lowering cholesterol levels, long-term use may be associated with certain side effects. These can include muscle pain and weakness, liver damage, an increased risk of developing diabetes, and an increased risk of developing cataracts. However, the benefits of statin therapy in reducing the risk of heart attack and stroke generally outweigh the risks of these side effects. It is important for patients to discuss any concerns they may have about Lipitor or other statins with their healthcare provider.