Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body. The dosage of Lipitor for high cholesterol may vary depending on several factors such as age, sex, medical history, and other medications being taken. According to the Mayo Clinic [3], the usual starting dose of Lipitor is 10 to 20 mg once a day, and the maximum recommended dose is 80 mg once a day. However, the dosage may be adjusted by a healthcare provider based on the patient's individual needs and response to the medication.

Medscape [2] states that the dosage of Lipitor may also depend on the type of high cholesterol being treated. For example, the recommended dosage for treating familial hypercholesterolemia, a genetic condition that causes high cholesterol levels, is typically higher than for treating other types of high cholesterol.

Drug Patent Watch [1] provides information on the availability of different strengths of Lipitor. The medication is available in tablet form in strengths of 10 mg, 20 mg, 40 mg, and 80 mg.

It is important to take Lipitor as prescribed by a healthcare provider and to follow the proper use guidelines [3]. Lipitor should be taken at the same time each day, with or without food. It is also important to continue taking Lipitor even if cholesterol levels improve, as stopping the medication may cause cholesterol levels to increase again.

In conclusion, the dosage of Lipitor for high cholesterol may vary depending on individual factors and the type of high cholesterol being treated. The usual starting dose is 10 to 20 mg once a day, and the maximum recommended dose is 80 mg once a day. It is important to take Lipitor as prescribed and to follow proper use guidelines.

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