Lipitor (atorvastatin) is a medication used to treat high cholesterol and reduce the risk of heart disease. The appropriate dose of Lipitor varies depending on the individual's medical condition and response to treatment. The initial recommended dose of Lipitor is typically 10 to 20 mg once daily, and the maximum dose is 80 mg per day [3].

It is important to note that the dosage of Lipitor may be increased or decreased by a healthcare provider based on the individual's response to treatment and any potential side effects. For example, a patient's dose may be increased if their cholesterol levels remain high despite initial treatment, or if they experience a heart attack or stroke [2].

DrugPatentWatch reports that the patent for Lipitor expired in 2011, meaning that generic versions of the drug are available [1]. This may result in variations in the dose of atorvastatin prescribed, depending on the specific generic version of the medication that is being used.

In general, it is important to take Lipitor as prescribed by a healthcare provider and to follow the instructions on the medication label. Lipitor should be taken at the same time each day, with or without food, and should not be stopped without first consulting a healthcare provider [3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://reference.medscape.com/drug/lipitor-atorvaliq-atorvastatin-342446
[3] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/proper-use/drg-20067003