Lipitor is a medication used to treat high cholesterol levels. The active ingredient in Lipitor is atorvastatin calcium. According to the FDA-approved label for Lipitor, the recommended starting dose is 10 or 20 mg once daily, with a maximum dose of 80 mg/day for adults [2]. The label also states that the maximum dose for pediatric patients is 20 mg/day [2].

While the label does not specify a maximum dose for absorption, a study published in the Journal of Clinical Lipidology found that the maximum recommended dose of atorvastatin for patients with high cholesterol is 80 mg/day [3]. The study also noted that higher doses of atorvastatin did not result in a significant increase in cholesterol-lowering efficacy but did increase the risk of adverse effects [3].

It is important to note that the optimal dose of Lipitor may vary depending on the individual patient's medical history, age, and other factors. Therefore, it is essential to consult with a healthcare provider before taking any medication, including Lipitor [1].

In conclusion, while the FDA-approved label for Lipitor recommends a maximum dose of 80 mg/day for adults and 20 mg/day for pediatric patients, a study published in the Journal of Clinical Lipidology suggests that higher doses may not result in significant benefits and may increase the risk of adverse effects. It is essential to consult with a healthcare provider to determine the optimal dose of Lipitor for an individual patient [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/020702s057lbl.pdf
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2656667/