Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels. Grapefruit juice is known to interact with Lipitor, which can increase the risk of side effects. According to GoodRx [2], it is recommended to avoid consuming grapefruit juice while taking Lipitor. The reason behind this is that grapefruit juice contains compounds that can interfere with the enzymes responsible for breaking down Lipitor in the liver. As a result, the concentration of Lipitor in the bloodstream can increase, leading to an increased risk of side effects such as muscle pain, liver damage, and kidney failure.

Drug Patent Watch [1] provides information on the patent status of Lipitor, but does not offer any advice on the interaction between Lipitor and grapefruit juice. On the other hand, a study published in the Journal of Clinical Lipidology [3] recommends that patients taking Lipitor should avoid consuming grapefruit juice, as it can increase the risk of side effects. The study suggests that patients should wait at least four hours after taking Lipitor before consuming grapefruit juice to minimize the risk of interaction.

In conclusion, it is recommended to avoid consuming grapefruit juice while taking Lipitor to reduce the risk of side effects. Patients should wait at least four hours after taking Lipitor before consuming grapefruit juice [2][3]. It is important to follow the advice of a healthcare professional regarding the use of Lipitor and any potential interactions with other medications or foods.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/classes/statins/why-cant-i-have-grapefruit-with-my-statin
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589309/