Lipitor is a brand name for the drug atorvastatin, which is a medication used to lower cholesterol levels in the blood. According to the sources provided, the typical dosage levels of Lipitor are as follows:

- The usual starting dose of Lipitor is 10mg once a day for most people [1][2][3].
- The maximum recommended dose of Lipitor is 80mg once a day [2][3].
- The dosage may be adjusted by a healthcare provider based on individual factors such as age, medical history, and other medications being taken [1][2][3].
- Lipitor can be taken with or without food, but it is recommended to take it at the same time each day [2][3].
- Lipitor is typically taken long-term, as directed by a healthcare provider [2][3].

It is important to note that the dosage of Lipitor may vary depending on individual circumstances, and should only be taken as prescribed by a healthcare provider. Patients should also be aware of potential side effects and should discuss any concerns with their healthcare provider.

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