Lipitor (atorvastatin) is a medication that is used to lower cholesterol levels in the blood. According to the sources provided, there are no known interactions between Lipitor and orange juice. However, it is important to note that grapefruit juice can interact with Lipitor and increase the risk of side effects [2]. Therefore, it is recommended to avoid consuming grapefruit or grapefruit juice while taking Lipitor.

It is also important to note that Lipitor should be taken with a low-fat diet to maximize its effectiveness. Drinking orange juice in moderation as part of a balanced diet should not interfere with the medication's effectiveness. However, excessive consumption of orange juice can lead to weight gain and high blood sugar levels, which can interfere with the treatment of high cholesterol [3].

In summary, there are no known interactions between Lipitor and orange juice. However, grapefruit juice should be avoided while taking Lipitor. It is important to follow a low-fat diet while taking Lipitor, and excessive consumption of orange juice should be avoided. As with any medication, it is recommended to consult with a healthcare provider before making any changes to your diet or medication regimen.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.wellrx.com/lipitor/lifestyle-interactions/
[3] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details/list-interaction-food