The maximum Lipitor dosage varies depending on the patient's condition and medical history. According to Drugs.com [3], the maximum recommended daily dose of Lipitor is 80 mg. However, this dosage may not be suitable for all patients and should only be prescribed by a healthcare provider after considering the patient's individual circumstances. Medscape [2] notes that the dosage of Lipitor should be adjusted based on the patient's response to treatment and the risk of adverse effects. Patients with severe renal impairment or hepatic impairment should use Lipitor with caution and may require a lower dosage. Additionally, Drug Patent Watch [1] states that the recommended dosage for Lipitor is typically 10-80 mg per day, depending on the patient's condition and response to treatment. In conclusion, the maximum Lipitor dosage is 80 mg per day, but it may not be suitable for all patients and should only be prescribed by a healthcare provider after considering the patient's individual circumstances.

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