Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], Lipitor was approved by the FDA in 1996 and has since become one of the most widely prescribed drugs in the world. While Lipitor is generally well-tolerated, it is not without potential side effects.

One of the most common side effects of Lipitor is muscle pain and weakness. According to Mayo Clinic [2], this occurs in about 10% of patients taking the drug. In rare cases, Lipitor can cause a serious condition called rhabdomyolysis, which can lead to kidney damage or failure. Other potential side effects of Lipitor include liver damage, digestive problems, and memory loss or confusion. Drugs.com [3] also notes that Lipitor may increase the risk of developing diabetes, particularly in patients with existing risk factors.

Despite these potential side effects, Lipitor has been shown to be effective at reducing the risk of heart attack and stroke in patients with high cholesterol. According to Mayo Clinic [2], studies have shown that statins like Lipitor can reduce the risk of heart attack by up to 30% in patients with high cholesterol.

In conclusion, while Lipitor can have potential side effects such as muscle pain and weakness, liver damage, digestive problems, and memory loss or confusion, it has also been shown to be effective at reducing the risk of heart attack and stroke in patients with high cholesterol. As with any medication, patients should discuss the potential benefits and risks of Lipitor with their healthcare provider.

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.drugs.com/sfx/lipitor-side-effects.html