Lipitor is a brand name for atorvastatin, a medication that belongs to the class of drugs known as statins. It is used to lower cholesterol levels and reduce the risk of heart attack and stroke [1]. However, like all medications, Lipitor has some potential side effects that patients should be aware of.

The most common side effects of Lipitor include muscle and joint pain, headache, diarrhea, and nausea. These side effects are usually mild and go away on their own after a few days or weeks of treatment. However, some patients may experience more serious side effects, such as liver damage, kidney problems, and muscle breakdown, which can lead to kidney failure [2].

In rare cases, Lipitor can also cause a condition called rhabdomyolysis, which is a severe form of muscle breakdown that can cause kidney damage and even death. Symptoms of rhabdomyolysis include muscle pain, weakness, and dark urine. Patients who experience these symptoms should seek medical attention immediately [3].

It is important to note that not everyone who takes Lipitor will experience side effects, and the benefits of the medication usually outweigh the risks. However, patients should talk to their doctor about any concerns they have about taking Lipitor and report any side effects they experience.

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