Lipitor is a brand name for the drug atorvastatin, which is a medication used to lower cholesterol levels in the blood [1]. According to a study published in the US National Library of Medicine, atorvastatin can be adjusted to maintain its effectiveness [2]. The study found that adjusting the dosage of atorvastatin could improve its effectiveness in reducing cholesterol levels. The study also recommended that patients taking atorvastatin should have their cholesterol levels monitored regularly to ensure that the medication is working effectively.

According to the American Academy of Family Physicians, atorvastatin should be started at a low dose and gradually increased if necessary [3]. The dosage of atorvastatin should be adjusted based on the patient's cholesterol levels and other factors such as age, gender, and other medical conditions. The dosage may also need to be adjusted if the patient experiences any side effects from the medication.

In conclusion, atorvastatin, sold under the brand name Lipitor, can be adjusted to maintain its effectiveness in reducing cholesterol levels. Patients taking atorvastatin should have their cholesterol levels monitored regularly, and the dosage of the medication should be adjusted based on the patient's cholesterol levels and other factors. It is important to consult with a healthcare provider before making any changes to the dosage of atorvastatin.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6464917/
[3] https://www.aafp.org/pubs/afp/issues/2007/0515/p1487.html