Lipitor is a medication used to lower cholesterol levels in the blood. While taking Lipitor, it is essential to be aware of any potential interactions with certain foods, including berries. According to the sources provided, there is no evidence to suggest that any specific type of berry is unsafe to consume while taking Lipitor. However, it is important to note that grapefruit and grapefruit juice should be avoided as they can increase the risk of side effects.

The first source [1] provides information about Lipitor and its active ingredient, atorvastatin. It does not mention any specific interactions with berries or any other foods.

The second source [2] discusses the potential interactions between statins, a class of drugs that includes Lipitor, and certain foods. The article notes that while some studies suggest that berries may have a beneficial effect on cholesterol levels, there is no evidence to suggest that any specific type of berry is unsafe to consume while taking Lipitor.

The third source [3] provides information about the potential interactions between medications and various fruits, including berries. While the article notes that some fruits, such as grapefruit, can interact with certain medications, it does not mention any specific interactions between Lipitor and berries.

In conclusion, based on the sources provided, there is no evidence to suggest that any specific type of berry is unsafe to consume while taking Lipitor. However, it is important to avoid grapefruit and grapefruit juice as they can increase the risk of side effects. As with any medication, it is always best to consult with a healthcare professional regarding any potential interactions with foods or other medications.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589309/
[3] https://medsafe.govt.nz/profs/PUArticles/March2015FruitInteractions.htm