Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to the Mayo Clinic [3], the dosage of Lipitor is usually between 10-80 mg per day, and it is typically taken once daily. The dosage may vary depending on various factors, including the patient's age, gender, medical history, and other medications they may be taking.

However, there is no specific dosage recommendation for elderly patients in the sources provided. The Drug Patent Watch [1] provides information about the Lipitor patent, but it does not mention anything about dosage for elderly patients. The article published in the National Center for Biotechnology Information [2] talks about the use of statins in elderly patients, but it does not provide any specific information about the dosage of Lipitor.

In general, the dosage of medications for elderly patients may be adjusted based on their age-related changes in body composition, metabolism, and organ function. The dosage may also be lower for elderly patients who have other medical conditions or are taking other medications that can interact with Lipitor. Therefore, it is important for elderly patients to consult their healthcare provider before taking Lipitor or any other medication.

In conclusion, there is no specific dosage recommendation for elderly patients in the sources provided for Lipitor. However, the dosage of Lipitor may be adjusted based on various factors, including the patient's age, medical history, and other medications they may be taking. Elderly patients should consult their healthcare provider before taking Lipitor or any other medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915405/
[3] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/proper-use/drg-20067003?p=1