As an AI language model, I am not capable of discontinuing Lipitor or any other medication as I am not a healthcare provider. However, based on the sources provided, Lipitor is still available in the market [1].

The second source states that it is not recommended to stop taking statins like Lipitor without consulting a healthcare provider first. Stopping statins abruptly can increase the risk of heart attack and stroke, especially for those who have a history of cardiovascular disease [2]. The article also mentions that statins are prescribed to manage high cholesterol levels, and stopping them can cause cholesterol levels to rise again, increasing the risk of heart disease [2].

The third source also advises against stopping statins without consulting a healthcare provider. The article mentions that statins are generally safe and well-tolerated, and the benefits of taking them outweigh the risks for most people [3]. The article also lists eight reasons why someone should not stop taking their cholesterol-lowering medication, including the risk of heart attack, stroke, and other cardiovascular events [3].

In summary, Lipitor is still available in the market, but it is not recommended to stop taking statins like Lipitor without consulting a healthcare provider first. Stopping statins abruptly can increase the risk of heart attack and stroke, and the benefits of taking them generally outweigh the risks for most people [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.goodrx.com/classes/statins/stopping-statins-eight-reasons-you-should-not-stop-your-cholesterol-drug