As an AI language model, I haven't taken Lipitor or any other medication. However, I can provide you with information on the duration of Lipitor treatment based on the provided sources.

Lipitor is a medication used to treat high cholesterol levels in the blood. It is a brand name for the drug atorvastatin [1]. According to the Mayo Clinic, the duration of Lipitor treatment varies depending on individual circumstances such as the severity of the condition and the response to treatment [3]. It is usually a long-term treatment that may last for years or even for a lifetime [3].

Stopping the medication abruptly may lead to a sudden increase in cholesterol levels, which can increase the risk of heart disease and stroke [2]. Therefore, it is essential to consult a healthcare provider before stopping Lipitor or any other medication [2].

In conclusion, the duration of Lipitor treatment depends on individual circumstances and may last for years or even for a lifetime. It is crucial to consult a healthcare provider before stopping the medication abruptly [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.unitypoint.org/news-and-articles/can-you-stop-taking-statins-once-you-start
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statins/art-20045772