Based on the sources provided, there is no specific mention of plant-based foods that should be avoided while taking Lipitor (atorvastatin), a medication used to lower cholesterol levels. However, it is important to note that certain dietary factors can affect the effectiveness and absorption of Lipitor.

Lipitor is a medication that belongs to a class of drugs called statins, which work by reducing the production of cholesterol in the liver. While taking Lipitor, it is generally recommended to follow a healthy diet that is low in saturated fats and cholesterol, and rich in fruits, vegetables, whole grains, and lean proteins [3].

It is worth noting that grapefruit and grapefruit juice are known to interact with some medications, including certain statins. However, there is no specific mention of Lipitor being affected by grapefruit in the sources provided. Nevertheless, it is always a good idea to consult with a healthcare professional or pharmacist regarding any potential interactions between specific foods and medications, including Lipitor.

In summary, there is no specific information in the provided sources regarding plant-based foods that should be avoided while taking Lipitor. However, it is generally recommended to follow a healthy diet that is low in saturated fats and cholesterol while taking this medication.

Sources:
[1] Drug Patent Watch. Lipitor - Tradename Details. Retrieved from: https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Medical News Today. What to know about Zetia. Retrieved from: https://www.medicalnewstoday.com/articles/zetia
[3] Everyday Health. Lipitor (Atorvastatin). Retrieved from: https://www.everydayhealth.com/drugs/lipitor