Lipitor is a brand name for the drug atorvastatin, which is a type of statin used to lower cholesterol levels in the body. According to the sources provided, there is no specific type of berries that one needs to avoid while taking Lipitor. However, there are certain fruits, such as grapefruit, that can interact with statins, including Lipitor, and affect how the body metabolizes the drug [2].

Grapefruit contains compounds that inhibit an enzyme called CYP3A4, which plays a crucial role in breaking down many drugs, including statins. When this enzyme is inhibited, the level of the drug in the bloodstream can increase, which can lead to potential side effects [2]. Therefore, it is recommended to avoid consuming grapefruit or drinking grapefruit juice while taking Lipitor or any other statin medication [2].

As for berries, there is no evidence to suggest that any specific type of berries can interact with Lipitor or affect its efficacy. In fact, berries are generally considered to be a healthy food choice for people with high cholesterol levels. Berries are rich in antioxidants and fiber, which can help lower cholesterol levels and reduce the risk of heart disease [3].

In conclusion, there is no specific type of berries to avoid while taking Lipitor. However, it is recommended to avoid consuming grapefruit or drinking grapefruit juice while taking Lipitor or any other statin medication. It is also important to consult with a healthcare provider before making any changes to your diet or medication regimen [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.healthline.com/health/high-cholesterol/grapefruit-and-statins
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589309/