Lipitor is a type of statin drug that is commonly prescribed to lower cholesterol levels. According to the sources provided, it is not safe to consume grapefruit or grapefruit juice while taking Lipitor. This is because grapefruit contains compounds that can interfere with the enzymes responsible for breaking down Lipitor in the liver, leading to an increase in the concentration of the drug in the bloodstream. This can increase the risk of side effects, including muscle pain and liver damage.

However, the sources do not provide a clear answer to whether it is safe to eat grapefruit after stopping Lipitor. It is important to note that the effects of grapefruit on drug metabolism can persist for up to 24 hours after consumption, so it may be best to avoid grapefruit for at least a day after stopping Lipitor. It is also recommended to consult with a healthcare provider before making any changes to medication or diet.

In conclusion, it is not safe to consume grapefruit while taking Lipitor, but it is unclear whether it is safe to eat grapefruit after stopping Lipitor. It is important to consult with a healthcare provider for personalized advice.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/classes/statins/why-cant-i-have-grapefruit-with-my-statin
[3] https://www.health.harvard.edu/heart-health/grapefruit-juice-and-statins