Lipitor is a brand name for the drug atorvastatin, which is a type of statin medication used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], stopping Lipitor abruptly does not have any immediate or severe side effects. However, abruptly stopping statins can lead to several negative consequences, as mentioned by GoodRx [2]. These include an increased risk of heart attack, stroke, and other cardiovascular events, as well as a higher likelihood of experiencing muscle pain and weakness.

The CNN article [3] further emphasizes the importance of not abruptly stopping statins, citing a study that found that people who stopped taking statins had a 33% higher risk of heart attack and stroke compared to those who continued taking the medication. The article also notes that some people may experience side effects while taking statins, such as muscle pain, but these side effects can often be managed by adjusting the dosage or switching to a different medication.

In summary, stopping Lipitor abruptly does not have any immediate or severe side effects, but stopping statins in general can lead to negative consequences such as an increased risk of cardiovascular events and muscle pain. It is important to consult with a healthcare provider before making any changes to medication regimens.

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.cnn.com/2017/07/24/health/statins-side-effects-outcomes-study/index.html