Atorvastatin is the generic name for Lipitor, which is a medication used to treat high cholesterol. Like all medications, Atorvastatin has potential side effects. According to the NHS [2], the most common side effects of Atorvastatin include headache, nausea, diarrhea, muscle and joint pain, and an increase in blood sugar levels. These side effects are generally mild and go away on their own after a short time. However, some people may experience more serious side effects, such as liver problems, muscle damage, and an increased risk of developing type 2 diabetes.

Drugwatch [3] reports that Atorvastatin may also cause memory loss, confusion, and depression, although these side effects are rare. In rare cases, Atorvastatin can also cause a serious condition called rhabdomyolysis, which is the breakdown of muscle tissue that can lead to kidney failure. Patients taking Atorvastatin should be aware of the signs of rhabdomyolysis, which include muscle pain, weakness, and dark urine, and should seek medical attention immediately if they experience these symptoms.

In conclusion, while Atorvastatin is generally well-tolerated, it does have potential side effects, ranging from mild to serious. Patients taking Atorvastatin should be aware of these potential side effects and should contact their doctor if they experience any unusual symptoms. It is important to note that not everyone who takes Atorvastatin will experience side effects, and many people find that the benefits of taking the medication outweigh the risks. [2][3]

Sources:
[2] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/
[3] https://www.drugwatch.com/lipitor/side-effects/