Lipitor is a medication that is used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], Lipitor's active ingredient is atorvastatin calcium. Lipitor works by inhibiting an enzyme that is responsible for the production of cholesterol in the liver. However, it is important to note that taking Lipitor with high-fat meals may decrease its effectiveness in lowering cholesterol levels. This is because high-fat meals can interfere with the absorption of the medication, which may lead to reduced effectiveness.

According to University Hospitals [2], some common side effects of Lipitor include muscle pain, diarrhea, and nausea. In rare cases, Lipitor can cause serious side effects such as liver damage, muscle damage, and kidney failure. It is important to speak with a healthcare provider if any of these side effects occur.

The British Heart Foundation [3] states that statins, including Lipitor, are generally safe and well-tolerated. However, some people may experience side effects such as muscle pain, digestive problems, and headaches. These side effects are usually mild and go away on their own. In rare cases, statins can cause more serious side effects such as liver damage and muscle breakdown.

In conclusion, Lipitor is a medication used to lower cholesterol levels in the blood. While taking Lipitor with high-fat meals may decrease its effectiveness, the medication is generally safe and well-tolerated. However, like all medications, Lipitor can cause side effects, and it is important to speak with a healthcare provider if any side effects occur.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.uhhospitals.org/blog/articles/2020/12/are-statins-really-worth-taking-for-high-cholesterol
[3] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/drug-cabinet/statins