Lipitor is a medication used to lower cholesterol levels in the body. Atorvastatin is the active ingredient in Lipitor. It works by blocking the enzyme responsible for producing cholesterol in the liver [1]. While it is generally considered safe, there are potential side effects associated with taking Lipitor, including stomach upset.

According to the Mayo Clinic [2], stomach upset is a common side effect of Lipitor. This can include symptoms such as nausea, diarrhea, and abdominal pain. These symptoms are usually mild and go away on their own. However, if they persist or become severe, it is important to speak with a doctor.

In some cases, stomach upset may be a sign of a more serious condition. According to Drugwatch [3], Lipitor can cause liver damage in rare cases. Symptoms of liver damage can include stomach pain, nausea, and vomiting. If you experience any of these symptoms, it is important to seek medical attention immediately.

It is important to note that not everyone will experience stomach upset while taking Lipitor. If you are concerned about potential side effects, it is important to speak with your doctor. They can help you determine if Lipitor is the right medication for you and provide guidance on managing any side effects that may occur.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20067003
[3] https://www.drugwatch.com/lipitor/side-effects/