Lipitor is a prescription medication used to lower cholesterol levels in the blood [1]. According to the sources provided, it is recommended to avoid consuming grapefruit or grapefruit juice while taking Lipitor or other statins [2][3]. Grapefruit contains compounds that can interfere with the enzymes responsible for breaking down statins in the body, resulting in higher levels of the medication in the bloodstream. This can increase the risk of side effects such as muscle pain, liver damage, and kidney failure. The interaction between grapefruit and statins can last for up to 24 hours after consuming grapefruit or grapefruit juice, so it is important to avoid it altogether while taking Lipitor [2]. Other citrus fruits such as oranges and tangerines do not have the same effect and can be safely consumed with statins. It is always important to consult with a healthcare provider before starting any new medication or making changes to your diet [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.verywellhealth.com/can-i-take-lipitor-or-zocor-with-grapefruit-juice-1124045
[3] https://www.goodrx.com/classes/statins/why-cant-i-have-grapefruit-with-my-statin