Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body [1]. According to the British Heart Foundation, the dosage of atorvastatin should be adjusted based on individual patient needs and response to the medication [2]. The National Center for Biotechnology Information also notes that the dosage of atorvastatin should be adjusted based on individual patient response, with the aim of achieving the target cholesterol levels [3].

The frequency of adjusting the dosage of atorvastatin may vary depending on the individual patient's needs. Patients should consult with their healthcare provider for guidance on how often their dosage should be adjusted. It is important to note that patients should not adjust their dosage without consulting their healthcare provider first.

In summary, the dosage of atorvastatin should be adjusted based on individual patient needs and response to the medication, with the aim of achieving the target cholesterol levels. Patients should consult with their healthcare provider for guidance on how often their dosage should be adjusted.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/drug-cabinet/statins
[3] https://www.ncbi.nlm.nih.gov/books/NBK430779/