Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body. While there is no evidence to suggest that Lipitor interacts with high protein diets, it is important to understand how certain foods can affect the medication's effectiveness.

According to a review of food-drug interactions, published in US Pharmacist [2], high protein diets do not interact with Lipitor. However, it is important to note that grapefruit and grapefruit juice can interfere with the metabolism of Lipitor, increasing the risk of side effects [2].

Furthermore, the drug label for Lipitor [1] states that it can be taken with or without food, indicating that food does not significantly affect its absorption.

It is worth noting that a high protein diet can affect the liver, which is responsible for processing Lipitor in the body [3]. Therefore, it is recommended that individuals on a high protein diet should have their liver function monitored regularly.

In conclusion, there is no evidence to suggest that Lipitor interacts with high protein diets. However, individuals taking Lipitor should be aware of the potential interaction with grapefruit and grapefruit juice. It is also important to monitor liver function regularly, particularly when on a high protein diet.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.uspharmacist.com/article/fooddrug-interactions
[3] https://www.ncbi.nlm.nih.gov/books/NBK430779/