Lipitor is a medication used to lower cholesterol levels in the body, but like any other drug, it may cause some side effects. Some of the warning signs of Lipitor complications include muscle pain, weakness, tenderness, or cramps, which may indicate a serious condition called rhabdomyolysis. This condition can cause muscle damage and kidney failure, and it requires immediate medical attention. Other possible side effects of Lipitor include liver problems, such as yellowing of the skin or eyes, dark urine, or abdominal pain. Lipitor may also increase the risk of developing type 2 diabetes, especially in people who have high blood sugar levels or are overweight. Additionally, Lipitor may cause memory loss, confusion, or cognitive impairment in some people, although this is rare. If you experience any of these symptoms or have concerns about the use of Lipitor, it is essential to consult your doctor immediately.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugwatch.com/lipitor/side-effects/
[3] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects