Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to sources [2] and [3], it is not recommended to eat grapefruit or drink grapefruit juice while taking Lipitor, as it can increase the levels of the medication in the bloodstream and lead to potentially harmful side effects. This is because grapefruit contains compounds that can interfere with the metabolism of certain medications, including Lipitor, by inhibiting an enzyme in the liver that helps break down the medication. As a result, the medication can build up in the body and cause an increased risk of side effects, such as muscle pain, liver damage, and kidney problems.

Therefore, it is recommended to avoid consuming grapefruit or grapefruit juice while taking Lipitor. If you have any concerns or questions about your medication, it is best to consult with your healthcare provider.

Sources:
[2] https://ro.co/health-guide/lipitor-and-grapefruit/
[3] https://www.goodrx.com/classes/statins/why-cant-i-have-grapefruit-with-my-statin