According to the sources provided, the recommended Lipitor dose for elderly patients depends on their individual medical history and current condition.

The first source, Drug Patent Watch [1], provides information on the different dosages available for Lipitor (atorvastatin) and their patent status. The second source, a study published in the National Center for Biotechnology Information [2], suggests that the starting dose for elderly patients should be lower than the usual starting dose of 10-20 mg/day for younger patients. This is because elderly patients may be more susceptible to adverse effects, such as muscle pain or weakness, which are associated with statin use.

The third source, Mayo Clinic [3], recommends that elderly patients start with a lower dose of 10 mg/day and gradually increase the dose if needed. The maximum recommended dose for elderly patients is 20 mg/day. The article also advises that elderly patients should be closely monitored for adverse effects and that the dose may need to be adjusted based on their response to treatment.

In summary, the recommended Lipitor dose for elderly patients is lower than the usual starting dose for younger patients. The starting dose is typically 10 mg/day, with a maximum recommended dose of 20 mg/day. However, the appropriate dose for an individual patient should be determined by their healthcare provider based on their medical history and current condition.

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