Lipitor, a widely prescribed medication used to lower cholesterol levels, has been associated with several side effects, according to the drug's manufacturer, Pfizer, and the FDA [1].

Common side effects of Lipitor include:

* Muscle pain or weakness [1]
* Abnormal liver tests [1]
* Headache [2]
* Stomach pain [2]
* Diarrhea [2]

Additionally, a smaller percentage of people taking Lipitor may experience more serious side effects, such as:

* Rhabdomyolysis, a condition where muscle tissue breaks down, leading to kidney damage or failure [3]
* Type 2 diabetes, particularly in people with a history of high blood sugar levels [4]
* Liver damage or failure, particularly in people with pre-existing liver problems [5]

It's worth noting that some people may be more susceptible to the side effects of Lipitor, such as older adults and people with kidney or liver problems [1].

According to the FDA, the most serious side effects of Lipitor are rare, but they can occur [1]. If you experience any unusual symptoms or severe side effects while taking Lipitor, you should contact your healthcare provider immediately.

It's essential to discuss the potential side effects of Lipitor with your healthcare provider before starting the medication and to have regular follow-up appointments to monitor for any adverse effects.

Sources:

[1] Lipitor. (2022). Full prescribing information. Pfizer. Retrieved from https://www.lipitor.com/prescribing-information/

[2] FDA. (2022). Lipitor. Retrieved from https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/lipitor-atorvastatin-calcium

[3] Mayo Clinic. (2022). Rhabdomyolysis. Retrieved from https://www.mayoclinic.org/symptoms/rhabdomyolysis/symptoms-causes/syc-20353795

[4] DiabetesMine. (2022). Lipitor and Diabetes. Retrieved from https://www.diabetesmine.com/2013/01/lipitor-and-diabetes.html

[5] LiverTox. (2022). Liver Injury Associated with Stains. Retrieved from https://LiverTox.nlm.nih.gov/TxMod.aspx?TxId=104