Lipitor is a medication used to lower cholesterol levels in the body, while plant-based protein supplements are dietary supplements that are used to increase protein intake. There is no evidence to suggest that Lipitor can interfere with plant-based protein supplements [1][2]. However, it is important to note that Lipitor can interact with certain foods and supplements, including grapefruit juice and red yeast rice, which can increase the risk of side effects [2][3]. Therefore, it is recommended to consult with a healthcare provider before taking any new supplements or making significant changes to your diet while taking Lipitor [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4642426/
[3] https://www.ahajournals.org/doi/10.1161/JAHA.117.006659.