Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the blood. Like any medication, it can cause side effects. The most common side effects of atorvastatin include headache, nausea, diarrhea, muscle pain, and joint pain [2]. These side effects are usually mild and go away on their own. However, some people may experience more serious side effects, such as liver problems, muscle damage, and diabetes [1].

Liver problems are rare but can occur in some people taking atorvastatin. Signs of liver problems include yellowing of the skin or eyes, dark urine, and upper stomach pain [2]. If you experience any of these symptoms, you should contact your doctor immediately.

Muscle damage is another rare but serious side effect of atorvastatin. Symptoms of muscle damage include muscle pain, weakness, and tenderness [3]. In rare cases, muscle damage can lead to a serious condition called rhabdomyolysis, which can cause kidney damage and even death [2]. If you experience any symptoms of muscle damage, you should stop taking atorvastatin and contact your doctor immediately.

Finally, atorvastatin has been linked to an increased risk of developing diabetes, especially in people who already have risk factors for the disease [1]. If you are taking atorvastatin and have concerns about your risk of developing diabetes, you should talk to your doctor.

In conclusion, while atorvastatin is generally safe and well-tolerated, it can cause side effects in some people. The most common side effects include headache, nausea, diarrhea, muscle pain, and joint pain. However, more serious side effects, such as liver problems, muscle damage, and diabetes, are rare but can occur. If you experience any symptoms of these side effects, you should contact your doctor immediately.

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