Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. The dosage of Lipitor can be adjusted based on several factors, including the patient's age, medical history, and response to treatment.

According to Medscape [2], the recommended starting dose of Lipitor for most adults is 10-20 mg once daily. The maximum recommended dose is 80 mg once daily. The dose may be adjusted based on the patient's response to treatment and any potential side effects.

DrugPatentWatch [1] states that the dosage of Lipitor can be adjusted based on the patient's age. For patients over 70 years of age or those with liver problems, the recommended starting dose is 10 mg once daily.

Drugs.com [3] suggests that the dosage of Lipitor may need to be adjusted if the patient is taking other medications that may interact with atorvastatin. For example, if the patient is taking certain antibiotics or antifungal medications, the dose of Lipitor may need to be reduced to avoid potential side effects.

It is important to note that any changes in dosage should be made under the guidance of a healthcare provider. Patients should not adjust their dosage without first consulting with their doctor.

In conclusion, the dosage of Lipitor can be adjusted based on several factors, including the patient's age, medical history, and response to treatment. The recommended starting dose is 10-20 mg once daily, and the maximum recommended dose is 80 mg once daily. Any changes in dosage should be made under the guidance of a healthcare provider.

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