Lipitor is a medication used to treat high cholesterol levels. According to Drug Patent Watch [1], the current dose of Lipitor is 10-80 mg once daily. While Lipitor is generally well-tolerated, it can cause side effects in some people. According to Mayo Clinic [2], some of the common side effects of Lipitor include muscle pain, weakness, and tenderness, nausea, diarrhea, and constipation. In rare cases, Lipitor can cause serious side effects such as liver problems, muscle damage, and an increased risk of diabetes. Healthline [3] also notes that some people may experience memory loss, confusion, and other cognitive problems while taking Lipitor. It is important to discuss any potential side effects with your doctor before starting Lipitor or any other medication.

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.healthline.com/health/drugs/lipitor