Atorvastatin, commonly known as Lipitor, is a medication used to lower cholesterol levels in the blood. According to the sources provided, it is recommended to take Lipitor once a day, at any time of the day, with or without food [2][3]. This means that there is no specific requirement to take Lipitor before or after meals. However, some sources suggest that taking Lipitor at the same time every day may help individuals remember to take their medication consistently [2].

It is important to note that certain foods, such as grapefruit and grapefruit juice, can interact with Lipitor and increase the risk of side effects [2][3]. Therefore, it is recommended to avoid consuming grapefruit or grapefruit juice while taking Lipitor.

In conclusion, while there is no specific requirement to take Lipitor before or after meals, it is important to take it consistently at the same time every day and to avoid consuming grapefruit or grapefruit juice while taking the medication.

Sources:
[2] https://www.nhs.uk/medicines/atorvastatin/how-and-when-to-take-atorvastatin/
[3] https://www.drugs.com/medical-answers/eat-food-taking-atorvastatin-3565628/
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR