According to the sources provided, Lipitor is a medication used to lower cholesterol levels in the body. It belongs to a class of drugs called statins, which work by inhibiting an enzyme involved in cholesterol production.

The dosage of Lipitor can vary depending on the individual's condition and response to treatment. The recommended starting dose for most adults is 10-20 mg once daily. However, the dosage may be adjusted by a healthcare professional based on factors such as the individual's cholesterol levels, medical history, and any other medications they may be taking.

It is important to note that Lipitor is available in different strengths, including 10 mg, 20 mg, 40 mg, and 80 mg tablets. The appropriate dosage will be determined by the healthcare provider, taking into consideration the individual's specific needs.

It is also worth mentioning that Lipitor is available in both brand-name and generic versions. The availability and coverage of the medication may vary depending on factors such as insurance coverage and formulary restrictions. It is advisable to consult with a healthcare provider or insurance provider to determine the coverage and cost of Lipitor.

In conclusion, the dosage of Lipitor can vary depending on the individual's condition and response to treatment. The recommended starting dose is typically 10-20 mg once daily, but the dosage may be adjusted by a healthcare professional. The availability and coverage of Lipitor may vary depending on factors such as insurance coverage and formulary restrictions.

Sources:
[1] Drug Patent Watch. Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] DailyMed. Lipitor (atorvastatin calcium) tablet, film-coated. Retrieved from https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=c6e131fe-e7df-4876-83f7-9156fc4e8228
[3] Drugs.com. Lipitor Dosage. Retrieved from https://www.drugs.com/dosage/lipitor.html