Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. According to the sources provided, it is recommended to take atorvastatin once a day, at any time of the day, with or without food [2, 3]. The drug is usually taken at the same time every day to maintain consistent levels in the body [2].

There is no specific waiting time mentioned before or after taking atorvastatin, and it can be taken with or without food [2, 3]. However, it is important to note that certain foods, such as grapefruit and grapefruit juice, can interact with atorvastatin and increase the risk of side effects [3]. Therefore, it is recommended to avoid consuming grapefruit or grapefruit juice while taking atorvastatin [3].

It is important to follow the instructions provided by the healthcare provider or pharmacist when taking atorvastatin. If a dose is missed, it should be taken as soon as possible, unless it is almost time for the next dose. In that case, the missed dose should be skipped and the regular dosing schedule should be resumed [2].

In conclusion, atorvastatin can be taken at any time of the day, with or without food. It is important to avoid consuming grapefruit or grapefruit juice while taking atorvastatin. If a dose is missed, it should be taken as soon as possible, unless it is almost time for the next dose. The instructions provided by the healthcare provider or pharmacist should be followed when taking atorvastatin [2, 3].

Sources:
[2] NHS. (2021). Atorvastatin. Retrieved from https://www.nhs.uk/medicines/atorvastatin/how-and-when-to-take-atorvastatin/
[3] Drugs.com. (2021). Can I eat food while taking atorvastatin? Retrieved from https://www.drugs.com/medical-answers/eat-food-taking-atorvastatin-3565628/
[1] Drug Patent Watch. (2021). Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR