Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels and reduce the risk of heart disease. While it is not primarily used for liver improvement, it may have some beneficial effects on the liver. However, the optimal dosage for this purpose is not clear and may depend on various factors.

According to DrugPatentWatch [1], the recommended starting dose of Lipitor is typically 10-20 mg once daily, with a maximum dose of 80 mg once daily. However, the optimal dosage for liver improvement may be different and may require individualized treatment.

A study published in the National Center for Biotechnology Information [2] found that atorvastatin improved liver function in patients with nonalcoholic fatty liver disease (NAFLD). The study used a dosage of 20 mg per day, which was well-tolerated by the patients. However, the study was small and more research is needed to confirm these findings.

Another study published in the Journal of Investigative Medicine [3] found that higher doses of atorvastatin (80 mg/day) may have more significant effects on liver function in patients with chronic hepatitis C. However, this study was also small and further research is needed to determine the optimal dosage for this purpose.

In conclusion, while Lipitor may have some beneficial effects on liver function, the optimal dosage for this purpose is not clear and may depend on various factors such as the patient's medical history and condition. It is important to consult with a healthcare provider before starting or changing any medication dosage.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/books/NBK548236/
[3] https://journals.sagepub.com/doi/10.1177/23247096211014050