Lipitor (atorvastatin) is a commonly prescribed medication for managing high cholesterol levels. According to the sources provided [1][2][3], the adjustment period for Lipitor can vary from person to person. Typically, the initial dosage of Lipitor is 10-20 mg/day, and the dosage can be increased gradually as needed. The adjustment period can last for several weeks to a few months. During this period, patients may experience some side effects, such as muscle pain, weakness, and fatigue. However, these side effects are usually mild and temporary, and they tend to improve over time. Patients should report any severe or persistent side effects to their healthcare provider. It is important to note that Lipitor should not be used during pregnancy or breastfeeding, and it may interact with other medications. Patients should discuss their medical history and any current medications with their healthcare provider before starting Lipitor. Overall, the adjustment period for Lipitor can vary, and patients should follow their healthcare provider's instructions and report any concerns or side effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://reference.medscape.com/drug/lipitor-atorvaliq-atorvastatin-342446
[3] https://www.ncbi.nlm.nih.gov/books/NBK548236/