Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to the NHS [2], Lipitor should be taken once a day, preferably in the evening, with or without food. The drug should be swallowed whole with a glass of water and should not be crushed or chewed. The dosage of Lipitor may vary depending on the individual's cholesterol levels and medical history. It is important to follow the dosage instructions given by the healthcare provider.

According to Drugs.com [3], Lipitor can be taken with or without food. However, taking Lipitor with food may help to increase its absorption and reduce the risk of side effects such as stomach upset. The drug should be taken at the same time each day to maintain a consistent level in the blood.

Drug Patent Watch [1] provides information on the expiration of the Lipitor patent. This information is not directly related to the question of how long to wait after eating before taking Lipitor.

In conclusion, Lipitor can be taken with or without food, but it is recommended to take it at the same time each day. The drug should be swallowed whole with a glass of water and should not be crushed or chewed. The dosage of Lipitor may vary depending on the individual's cholesterol levels and medical history. It is important to follow the dosage instructions given by the healthcare provider.

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/