Lipitor is a medication that is used to lower cholesterol levels in the blood. According to the NHS [2], the best time to take Lipitor is usually at night. This is because the body produces more cholesterol at night, and taking the medication at this time can help to lower the levels of cholesterol in the blood. Additionally, taking Lipitor at night can also help to reduce the risk of side effects, such as muscle pain and weakness.

It is important to take Lipitor as prescribed by a doctor, and to follow the instructions on the label [2]. The dosage of Lipitor will depend on the individual's cholesterol levels and other medical conditions. It is also important to continue taking Lipitor even if there are no symptoms, as high cholesterol levels can lead to serious health problems such as heart disease.

According to Drugs.com [3], Lipitor can be taken with or without food, but it is important to avoid drinking grapefruit juice while taking the medication. Grapefruit juice can increase the levels of Lipitor in the blood, which can increase the risk of side effects.

In conclusion, the best time to take Lipitor is usually at night, as this can help to lower cholesterol levels and reduce the risk of side effects. It is important to take Lipitor as prescribed by a doctor, and to avoid drinking grapefruit juice while taking the medication.

Sources:
[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/
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR