Lipitor is a medication used to lower cholesterol levels in the body. The dosage of Lipitor varies depending on the patient's age, medical history, and the severity of their condition.

According to Drug Patent Watch [1], Lipitor is available in tablet form in dosages of 10 mg, 20 mg, 40 mg, and 80 mg. The recommended starting dose for most adults is usually 10-20 mg per day, taken once daily. The dosage may be increased up to 80 mg per day, depending on the patient's response to the medication and their cholesterol levels.

Drugs.com [2] recommends a starting dose of 10-20 mg once daily for adults and children over the age of 10. The maximum recommended dose is 80 mg per day. The medication can be taken with or without food, but it should be taken at the same time every day.

Healthline [3] notes that the dosage of Lipitor may need to be adjusted in patients with liver or kidney problems. Patients with liver problems should start with a lower dose and be closely monitored by their healthcare provider. Patients with severe kidney problems may require a lower dose of Lipitor or a different medication altogether.

In conclusion, the dosage of Lipitor needed varies depending on the individual patient and their medical history. The recommended starting dose for most adults is usually 10-20 mg per day, taken once daily, and the maximum recommended dose is 80 mg per day. Patients with liver or kidney problems may require a lower dose and should be closely monitored by 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