Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. The dosage of Lipitor required for a patient depends on various factors, including the patient's age, medical condition, and response to treatment.

According to the drug patent watch website [1], Lipitor is available in tablet form with strengths of 10mg, 20mg, 40mg, and 80mg. The recommended starting dose for most adults is 10-20mg per day, which can be increased to a maximum of 80mg per day if needed.

Healthline [2] also states that the typical starting dose for adults is 10-20mg once daily, and the maximum recommended dose is 80mg per day. However, the recommended dose may vary depending on the patient's medical condition, age, and other factors.

Drugs.com [3] also provides information on Lipitor dosage, stating that the recommended starting dose is usually 10-20mg per day, and the maximum dose is 80mg per day. The website also notes that the dosage may be adjusted based on the patient's response to treatment and any side effects they experience.

In conclusion, the recommended dosage of Lipitor varies depending on the patient's age, medical condition, and response to treatment. The typical starting dose for most adults is 10-20mg per day, which can be increased to a maximum of 80mg per day if needed. It is important to follow the dosage instructions provided by a healthcare professional and not to exceed the recommended dose without consulting a doctor.

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