Lipitor is a medication used to lower cholesterol levels in the blood. According to the sources provided, there is no specific time frame mentioned for how long after taking Lipitor one can stop taking it. However, it is recommended to consult with a healthcare professional before making any changes to medication use.

The first source [1] provides information on the patent status of Lipitor, but does not mention anything about how long after taking it one can stop taking it. The second source [2] is an article from the British Heart Foundation that discusses the use of statins, including Lipitor, to lower cholesterol levels. The article states that statins are generally safe and effective, but can have side effects, and that it is important to talk to a doctor before stopping or changing statin use. The third source [3] is an article from UnityPoint Health that discusses the benefits and risks of statin use, and whether it is safe to stop taking statins once they have been started. The article notes that statins are usually taken for life, but that there may be situations where a doctor recommends stopping or changing statin use.

In conclusion, while the sources provided do not mention a specific time frame for how long after taking Lipitor one can stop taking it, they do emphasize the importance of consulting with a healthcare professional before making any changes to medication use. It is important to weigh the benefits and risks of statin use and to make decisions about medication use in consultation with a doctor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/drug-cabinet/statins
[3] https://www.unitypoint.org/news-and-articles/can-you-stop-taking-statins-once-you-start