Lipitor (atorvastatin) is a prescription medication used to lower cholesterol levels and prevent heart disease. While it is generally well-tolerated, there are some side effects to be aware of.

According to Drug Patent Watch [1], the most common side effects of Lipitor are headache, diarrhea, nausea, muscle pain, and joint pain. These side effects are usually mild and go away on their own. However, there are some more serious side effects that can occur, including liver damage, muscle damage, and an increased risk of diabetes.

The NHS [2] notes that muscle pain or weakness is a less common but potentially serious side effect of atorvastatin. If you experience unexplained muscle pain, tenderness, or weakness, you should contact your doctor immediately. This could be a sign of a rare but serious condition called rhabdomyolysis, which can cause kidney damage.

Drugwatch [3] adds that Lipitor can also cause memory loss, confusion, and other cognitive problems. These side effects are rare but can be serious, particularly in older adults. If you experience any changes in your memory or thinking while taking Lipitor, you should talk to your doctor.

In conclusion, while Lipitor is generally safe and effective, it is important to be aware of potential side effects. The most common side effects are mild and go away on their own, but more serious side effects can occur, including liver and muscle damage, an increased risk of diabetes, and cognitive problems. If you experience any unusual symptoms while taking Lipitor, you should contact your doctor immediately.

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