Lipitor is a medication used to treat high cholesterol levels in the blood. According to the NHS [2], the recommended dosage for Lipitor is usually once a day, and it can be taken with or without food. The dosage may vary depending on the patient's condition, age, and other factors. It is important to follow the instructions given by the doctor or pharmacist regarding the dosage.

Taking Lipitor before bed may be more effective in reducing cholesterol levels than taking it at other times of the day [3]. This is because the body produces more cholesterol at night, and taking Lipitor before bed can help to block the production of cholesterol more effectively. However, it is important to note that this is not a hard and fast rule, and taking Lipitor at other times of the day can also be effective.

It is important to take Lipitor as directed by the doctor or pharmacist, and not to exceed the recommended dosage. Overdosing on Lipitor can lead to serious side effects, such as muscle pain, liver damage, and kidney failure [1].

In conclusion, the recommended dosage for Lipitor is usually once a day, and it can be taken with or without food. Taking Lipitor before bed may be more effective in reducing cholesterol levels than taking it at other times of the day, but it is important to follow the instructions given by the doctor or pharmacist regarding the dosage. Overdosing on Lipitor can lead to serious side effects, so it is important not to exceed the recommended dosage.

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/does-lipitor-work-better-if-you-take-it-at-night-416127/