Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood and reduce the risk of heart disease. The recommended daily dose of Lipitor varies depending on the patient's condition and medical history. According to Drugs.com [2], the typical starting dose for adults is 10-20 mg once a day, and the maximum recommended dose is 80 mg once a day. The dose may be adjusted based on the patient's response to treatment and any side effects they experience.

Drugpatentwatch.com [1] notes that the patent for Lipitor expired in 2011, which means that generic versions of the drug are now available. The generic versions may have different recommended dosages than the brand-name Lipitor, so patients should consult with their healthcare provider or pharmacist to determine the appropriate dose for their specific situation.

Medscape [3] also notes that Lipitor should be taken at the same time each day, with or without food. Patients should avoid drinking grapefruit juice while taking Lipitor, as it can increase the risk of side effects.

In conclusion, the daily dose of Lipitor varies depending on the patient's condition and medical history. The typical starting dose for adults is 10-20 mg once a day, and the maximum recommended dose is 80 mg once a day. Patients should consult with their healthcare provider or pharmacist to determine the appropriate dose for their specific situation. It is also important to take Lipitor at the same time each day and avoid drinking grapefruit juice while taking the medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugs.com/dosage/lipitor.html
[3] https://reference.medscape.com/drug/lipitor-atorvaliq-atorvastatin-342446