Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood [1]. According to the sources provided, it is recommended to take Lipitor with or without food, but it is important to take it at the same time every day [2][3]. However, the NHS advises that it is best to take Lipitor at night because the body produces cholesterol mostly at night [3].

Regarding whether to take Lipitor before or after snacks, Drugs.com suggests that it is best to take it with food [2]. This is because taking Lipitor with food can help the body absorb the medication better, which can increase its effectiveness in lowering cholesterol levels [2]. However, it is important to avoid eating grapefruit or drinking grapefruit juice while taking Lipitor, as this can increase the risk of side effects [2][3].

In summary, Lipitor can be taken with or without food, but it is important to take it at the same time every day. It is recommended to take Lipitor at night, and taking it with food can help the body absorb the medication better. However, it is important to avoid grapefruit and grapefruit juice while taking Lipitor to reduce the risk of side effects.

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