Lipitor is a medication that belongs to the class of drugs known as statins. It is primarily used to lower cholesterol levels in the blood, thereby reducing the risk of heart disease and stroke [1]. According to the sources provided, there are several risks associated with stopping Lipitor.

Firstly, stopping Lipitor abruptly can cause a rebound effect, which means that the cholesterol levels in the blood may increase rapidly [2]. This can lead to an increased risk of heart disease and stroke, especially if the patient has a history of these conditions.

Secondly, stopping Lipitor can also lead to the development of withdrawal symptoms, which can include muscle pain, weakness, and cramps [3]. These symptoms can be severe and may persist for several weeks or even months.

Thirdly, if a patient stops taking Lipitor without consulting their doctor, they may miss out on important monitoring and follow-up appointments. Regular check-ups are essential to ensure that the medication is working effectively and to monitor for any potential side effects or complications.

In conclusion, stopping Lipitor can pose several risks to a patient's health, including a rebound effect, withdrawal symptoms, and missed monitoring appointments. Therefore, patients should always consult their doctor before making any changes to their medication regimen [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/classes/statins/stopping-statins-eight-reasons-you-should-not-stop-your-cholesterol-drug
[3] https://www.medicalnewstoday.com/articles/325834