Lipitor is a brand name for atorvastatin, a medication used to lower cholesterol levels in the blood. The recommended starting dose for Lipitor is usually 10-20 mg per day, taken once daily, with or without food [2]. The dosage may be increased after 2-4 weeks of treatment, depending on the patient's response to the medication and their cholesterol levels. The maximum recommended dose is 80 mg per day [2].

According to DrugPatentWatch, Lipitor is available in tablet form in several strengths, including 10 mg, 20 mg, 40 mg, and 80 mg [1]. This suggests that even the lowest dose of 10 mg is effective in lowering cholesterol levels in some patients.

It is important to note that the appropriate dosage of Lipitor may vary depending on a patient's individual health status and medical history. Patients should always follow their doctor's instructions regarding the dosage and administration of Lipitor [3]. Additionally, Lipitor may interact with other medications, so patients should inform their doctor of all medications they are taking before starting Lipitor [3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugs.com/dosage/lipitor.html
[3] https://www.medicalnewstoday.com/articles/drugs-lipitor-dosage