Lipitor, also known as atorvastatin, is a medication that is used to lower cholesterol levels in the blood. According to the drug patent watch [1], the recommended dosage for Lipitor is 10 to 80 mg once daily. However, the dosage may vary depending on the patient's age, medical history, and other factors. It is essential to follow the doctor's prescription and not to exceed the recommended dosage.

A study published in the Journal of Clinical Lipidology [2] found that a 10 mg daily dose of atorvastatin was effective in reducing low-density lipoprotein cholesterol (LDL-C) levels in patients with a high-fat diet. The study concluded that atorvastatin was effective in reducing LDL-C levels regardless of the dietary fat content.

Another study published in the Journal of Lipid Research [3] found that atorvastatin was effective in reducing the levels of cholesterol and triglycerides in the blood of mice fed a high-fat diet. The study suggested that atorvastatin could be a useful therapy for patients with hyperlipidemia and a high-fat diet.

In conclusion, the recommended dosage for Lipitor is 10 to 80 mg once daily, and it is effective in reducing cholesterol levels in patients with a high-fat diet. However, it is essential to follow the doctor's prescription and not to exceed the recommended dosage.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/21269482/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5766553/