Lipitor (atorvastatin) is a commonly prescribed medication for lowering cholesterol levels in the body. Grapefruit juice is known to interact with certain medications, including Lipitor, and can increase the risk of side effects.

According to Health Harvard [3], grapefruit juice can increase the concentration of Lipitor in the bloodstream, which can lead to an increased risk of side effects such as muscle pain, liver damage, and kidney failure. Therefore, it is recommended to avoid consuming grapefruit juice while taking Lipitor.

Ro [2] suggests that grapefruit juice can affect the way the body metabolizes Lipitor, and as a result, it can lead to an increase in the level of the drug in the bloodstream. This can cause side effects such as muscle pain and weakness, liver damage, and kidney failure. Therefore, it is recommended to avoid consuming grapefruit juice while taking Lipitor.

Drug Patent Watch [1] does not provide information on the recommended grapefruit juice intake with Lipitor. However, it is important to note that consuming grapefruit juice can lead to an increased risk of side effects, and it is generally recommended to avoid it while taking Lipitor.

In conclusion, based on the sources provided, it is recommended to avoid consuming grapefruit juice while taking Lipitor. Grapefruit juice can increase the concentration of Lipitor in the bloodstream, which can lead to an increased risk of side effects. It is always best to consult with a healthcare provider for specific recommendations on medication and dietary restrictions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://ro.co/health-guide/lipitor-and-grapefruit/
[3] https://www.health.harvard.edu/heart-health/grapefruit-juice-and-statins