Atorvastatin, sold under the brand name Lipitor, is a medication used to lower cholesterol levels in the blood. According to the sources provided, there are no specific side effects of taking Lipitor without food. However, it is important to follow the proper use guidelines to ensure the effectiveness of the medication and minimize potential side effects.

The recommended dosage of Lipitor is usually once a day, with or without food [2]. However, taking the medication at the same time each day can help maintain consistent levels in the bloodstream and improve its effectiveness. It is also important to take Lipitor as directed by a healthcare provider and not to change the dosage or frequency without consulting them first [3].

Like all medications, Lipitor may cause side effects. The most common side effects include muscle pain, weakness, and tenderness, as well as headache, nausea, and diarrhea [3]. In rare cases, Lipitor may cause more serious side effects such as liver problems, diabetes, and muscle breakdown [1]. If any of these side effects occur, it is important to seek medical attention immediately.

In conclusion, there are no specific side effects of taking Lipitor without food. However, it is important to follow the proper use guidelines and take the medication as directed to ensure its effectiveness and minimize potential side effects. If any side effects occur, it is important to seek medical attention immediately.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/proper-use/drg-20067003
[3] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/