Lipitor is a brand name for atorvastatin, which is a medication used to treat high cholesterol and reduce the risk of heart attack and stroke. As with any medication, Lipitor has potential side effects that patients should be aware of.

According to the Mayo Clinic [2], common side effects of Lipitor include headache, nausea, diarrhea, constipation, and muscle and joint pain. These side effects are usually mild and go away on their own. However, if they persist or become severe, patients should consult their doctor.

More serious side effects of Lipitor are rare but can occur. These include liver problems, muscle damage, and an increased risk of diabetes. Patients should seek medical attention immediately if they experience symptoms such as dark urine, yellowing of the skin or eyes, unexplained muscle pain or weakness, or fatigue.

The NHS [3] lists additional side effects that patients may experience when taking Lipitor, including insomnia, dizziness, and a rash. Patients should also be aware of the potential for allergic reactions, which can cause symptoms such as difficulty breathing, swelling of the face or throat, and hives.

It is important for patients to discuss any concerns or questions about Lipitor side effects with their doctor. They should also inform their doctor of any other medications or supplements they are taking, as these can interact with Lipitor and increase the risk of side effects.

Sources:
[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/