Lipitor is a commonly prescribed medication for the treatment of high cholesterol. According to Drug Patent Watch [1], Atorvastatin, the generic name for Lipitor, is a medication that is used to lower cholesterol levels in the blood. It works by blocking the enzyme that produces cholesterol in the liver. While Lipitor is generally well-tolerated, it can cause side effects in some people.

According to the National Health Service [2], common side effects of Lipitor include headache, nausea, diarrhea, constipation, and abdominal pain. Other possible side effects include muscle pain, joint pain, and an increased risk of diabetes. In rare cases, Lipitor can cause liver problems, muscle damage, or a serious allergic reaction.

Drugwatch [3] notes that Lipitor can also cause cognitive problems such as memory loss, confusion, and forgetfulness. It is important to note that these side effects are rare and are more likely to occur in people who are taking high doses of Lipitor or who have pre-existing health conditions.

In conclusion, Lipitor is generally well-tolerated, but it can cause side effects in some people. Common side effects include headache, nausea, diarrhea, constipation, and abdominal pain. Other possible side effects include muscle pain, joint pain, and an increased risk of diabetes. Rare side effects include liver problems, muscle damage, and a serious allergic reaction. It is important to talk to your doctor if you experience any side effects while taking Lipitor.

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/