Lipitor is a medication used to lower cholesterol levels in the blood. It is a type of medication called a statin, which works by blocking an enzyme that produces cholesterol in the liver. According to Drugs.com [2], Lipitor can be taken with or without food. However, it is important to note that certain foods can interfere with the absorption of Lipitor and reduce its effectiveness. For example, grapefruit and grapefruit juice can increase the levels of Lipitor in the blood and increase the risk of side effects [2]. Therefore, it is recommended to avoid consuming grapefruit or grapefruit juice while taking Lipitor. Other foods that are high in fat or cholesterol should also be avoided or consumed in moderation, as they can counteract the effects of Lipitor [2].

As with any medication, Lipitor may cause side effects. The most common side effects include muscle pain, digestive problems, and headache [3]. In rare cases, Lipitor can cause more serious side effects such as liver damage, muscle breakdown, and kidney problems [3]. If you experience any unusual symptoms while taking Lipitor, you should contact your doctor immediately.

In summary, Lipitor can be taken with or without food, but certain foods such as grapefruit should be avoided. It is important to be aware of the potential side effects of Lipitor and to contact your doctor if you experience any unusual symptoms.

Sources:
[2] https://www.drugs.com/medical-answers/eat-food-taking-atorvastatin-3565628/
[3] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR