Lipitor is a prescription drug that is used to lower cholesterol levels in the blood. According to the sources provided, there is no clear answer to how long after stopping Lipitor one can resume taking it.

The first source [1] provides information about the patent expiration of Lipitor, but it does not address the question of how long one should wait before resuming the medication.

The second source [2] discusses the potential side effects of statins, including Lipitor, and the benefits of taking them. However, it does not provide any information on how long one should wait before resuming the medication after stopping it.

The third source [3] explains that stopping statins suddenly can be harmful and can increase the risk of heart attack or stroke. It recommends that patients should not stop taking statins without consulting their healthcare provider. However, it does not provide any information on how long one should wait before resuming the medication after stopping it.

In conclusion, based on the sources provided, there is no clear answer to how long after stopping Lipitor one can resume taking it. Patients should consult their healthcare provider before stopping or resuming any medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.cnn.com/2017/07/24/health/statins-side-effects-outcomes-study/index.html
[3] https://www.unitypoint.org/news-and-articles/can-you-stop-taking-statins-once-you-start