Lipitor is a brand name for the drug atorvastatin, which is a type of medication used to lower cholesterol levels in the body [1]. According to the Mayo Clinic, Lipitor is generally safe and well-tolerated by most people, but like any medication, it can cause side effects [2]. Some of the common side effects of Lipitor include muscle aches and pains, digestive problems, headache, and a rash [2]. However, most of these side effects are mild and go away on their own after a few days or weeks [2].

When taken for a long time, Lipitor can cause more serious side effects, such as liver damage, memory loss, and an increased risk of developing type 2 diabetes [2]. However, these side effects are rare and usually only occur in people who take high doses of Lipitor for a long time [2]. In fact, a study published in the Journal of Clinical Lipidology found that the risk of developing serious side effects from Lipitor is low, even when taken for a long time [3].

In conclusion, while Lipitor can cause side effects, most of them are mild and go away on their own. Serious side effects are rare and usually only occur in people who take high doses of Lipitor for a long time. If you are taking Lipitor and experience any side effects, you should talk to your doctor to determine if you need to adjust your dosage or switch to a different medication [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4059187/