Lipitor is a medication used to lower cholesterol levels in the blood. According to the sources provided, there are several common side effects associated with the use of Lipitor.

The first source [1] lists the most common side effects of Lipitor as headache, diarrhea, and muscle pain. It also notes that less common side effects include joint pain, nausea, and stomach pain.

The second source [2] provides a more comprehensive list of potential side effects. It notes that common side effects of Lipitor include headache, nausea, diarrhea, constipation, and muscle and joint pain. It also lists less common side effects such as dizziness, fatigue, insomnia, and skin rash. Additionally, the source warns that Lipitor can cause serious side effects such as liver problems, muscle damage, and an increased risk of diabetes.

The third source [3] provides similar information about the potential side effects of Lipitor. It notes that common side effects include headache, digestive problems, and muscle pain, and that less common side effects include dizziness, insomnia, and skin rash. The source also warns of the potential for serious side effects such as liver problems and muscle damage.

In summary, the sources provided suggest that common side effects of Lipitor include headache, digestive problems, and muscle pain. While less common, dizziness, fatigue, and skin rash may also occur. Patients taking Lipitor should be aware of the potential for serious side effects such as liver problems and muscle damage. It is important to consult with a healthcare provider if any concerning side effects are experienced while taking Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20067003
[3] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/