Lipitor is a medication used to lower cholesterol levels in the body [2]. According to the Mayo Clinic, Lipitor is usually taken once a day, with or without food, at any time of the day [2]. The dosage and schedule of Lipitor may vary depending on the individual's cholesterol levels and medical history [2]. The initial dose for most adults is 10 mg once a day, and the maximum dose is 80 mg once a day [2]. However, the dose may be adjusted by a healthcare professional based on the patient's response to the medication and the cholesterol levels [2].

The patent for Lipitor expired in 2011, which means that other companies can now produce generic versions of the drug [1]. However, the dosage and schedule for the generic versions of Lipitor may vary depending on the manufacturer [1]. Therefore, it is important to follow the instructions provided by the healthcare professional and the medication label [2].

In summary, the schedule for taking Lipitor may vary depending on the individual's cholesterol levels and medical history, and it is usually taken once a day at any time of the day [2]. The dosage may be adjusted by a healthcare professional based on the patient's response to the medication and the cholesterol levels [2]. It is important to follow the instructions provided by the healthcare professional and the medication label [2]. The expiration of the Lipitor patent in 2011 allows other companies to produce generic versions of the drug, but the dosage and schedule for these versions may vary depending on the manufacturer [1].

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.ncbi.nlm.nih.gov/books/NBK430779/