Atorvastatin, commonly known as Lipitor, is a medication used to lower cholesterol levels and reduce the risk of heart disease and stroke [1]. According to the NHS, atorvastatin should be taken once a day, preferably in the evening, with or without food [2]. However, Drugs.com recommends taking atorvastatin with food, as it may increase the absorption of the medication and improve its effectiveness [3].

While it is possible to take atorvastatin on an empty stomach, it is generally recommended to take it with food to improve its absorption and effectiveness. It is important to follow the instructions of your healthcare provider or the label on the medication for the best results. If you have any concerns or questions about taking atorvastatin, it is recommended to consult with your 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/