Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body. According to the sources provided, there are several potential side effects associated with the use of Lipitor.

Common side effects of Lipitor include headache, nausea, diarrhea, constipation, and muscle pain [2]. In some cases, Lipitor may also cause liver problems, such as an increase in liver enzymes or liver damage [1]. However, this is rare and usually only occurs in individuals who take high doses of the medication for extended periods of time.

More serious side effects of Lipitor include muscle damage and kidney problems [3]. Lipitor can cause a condition called rhabdomyolysis, which is a breakdown of muscle tissue that can lead to kidney failure and other complications [2]. This is a rare but potentially life-threatening side effect of the medication.

Other potential side effects of Lipitor include memory loss, confusion, and an increased risk of developing type 2 diabetes [2]. However, it is important to note that these side effects are relatively uncommon and usually only occur in individuals who take high doses of the medication for extended periods of time.

In conclusion, Lipitor is generally considered to be a safe and effective medication for lowering cholesterol levels. However, like all medications, it does carry some potential side effects. If you experience any side effects while taking Lipitor, you should speak to your doctor immediately.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugwatch.com/lipitor/side-effects/
[3] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/