Lipitor is a brand name for the drug atorvastatin, which is a type of medication used to lower cholesterol levels in the body. The duration of treatment with Lipitor varies depending on the individual's condition and response to treatment. According to the NHS [2], the treatment with atorvastatin usually starts with a low dose, which is then gradually increased if necessary. The treatment should continue for as long as the doctor recommends it, and the patient should not stop taking the medication without consulting their doctor first.

According to Drug Patent Watch [1], the patent for Lipitor expired in 2011, which means that generic versions of the drug are available on the market. The availability of generic versions may affect the cost of the medication, but it does not affect the recommended duration of treatment.

Blink Health [3] suggests that statin therapy, including atorvastatin, is usually a lifelong treatment. The duration of treatment may vary depending on the individual's risk factors for cardiovascular disease and their response to treatment. However, the decision to continue or discontinue the treatment should be made in consultation with a healthcare professional.

In summary, the duration of treatment with Lipitor (atorvastatin) varies depending on the individual's condition and response to treatment. The treatment usually starts with a low dose and is gradually increased if necessary. The treatment should continue for as long as the doctor recommends it, and the decision to continue or discontinue the treatment should be made in consultation with a healthcare professional. Lipitor is available in generic versions, but the availability of generic versions does not affect the recommended duration of treatment.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/medicines/atorvastatin/how-and-when-to-take-atorvastatin/
[3] https://www.blinkhealth.com/blog/how-long-will-i-need-to-take-a-statin-for