Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the body [1]. According to the National Health Service (NHS), atorvastatin should be taken once a day, preferably in the evening, with or without food [2]. However, it is recommended to take atorvastatin with a meal, as it can be absorbed better with food [3].

Regarding the amount of food to eat with Lipitor, there is no specific recommendation. However, it is advisable to have a balanced and healthy diet, which includes plenty of fruits, vegetables, and whole grains, and to avoid high-fat meals that may interfere with the medication's effectiveness [2]. It is also important to avoid grapefruit and grapefruit juice while taking atorvastatin, as they can increase the risk of side effects [2].

In summary, atorvastatin should be taken once a day, preferably in the evening, with or without food, but it is recommended to take it with a meal. There is no specific amount of food to eat with Lipitor, but it is advisable to have a balanced and healthy diet and avoid high-fat meals. Grapefruit and grapefruit juice should also be avoided while taking atorvastatin.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[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/