Lipitor (atorvastatin) is a medication that is used to lower cholesterol levels in the blood. It is important to consult with a doctor before changing the dosage of Lipitor or any other medication. According to Drug Patent Watch [1], Lipitor is available in tablet form in doses of 10 mg, 20 mg, 40 mg, and 80 mg. The dosage of Lipitor that a patient should take will depend on their individual medical history and the severity of their condition.

WebMD [2] notes that Lipitor is typically taken once a day, with or without food. It is important to take Lipitor at the same time each day to maintain consistent levels of the medication in the blood. The recommended starting dose of Lipitor for most adults is 10 mg once daily. However, the dosage may be increased to a maximum of 80 mg once daily, depending on the patient's response to the medication and any side effects that may occur.

Medscape [3] highlights that Lipitor may interact with other medications, such as certain antibiotics and antifungal medications, and may also be contraindicated in patients with certain medical conditions, such as liver disease. Therefore, it is important to consult with a doctor before changing the dosage of Lipitor or any other medication.

In summary, Lipitor is available in doses of 10 mg, 20 mg, 40 mg, and 80 mg, and the appropriate dosage for a patient will depend on their individual medical history and the severity of their condition. It is important to take Lipitor at the same time each day and to consult with a doctor before changing the dosage or if any side effects occur.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details
[3] https://reference.medscape.com/drug/lipitor-atorvaliq-atorvastatin-342446