Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the body [1]. According to the National Health Service (NHS), people who have undergone coronary artery bypass graft (CABG) surgery, which is a type of heart surgery, should avoid eating fatty foods, including red meat like beef, to reduce the risk of developing further heart problems [2]. However, the NHS does not mention any specific concerns about consuming beef while taking Lipitor.

A report by Prevention suggests that people taking statins, including Lipitor, should eat a healthy and balanced diet that includes plenty of fruits, vegetables, whole grains, lean protein, and low-fat dairy products [3]. The report does not recommend avoiding beef altogether, but rather suggests choosing lean cuts of beef and limiting portion sizes.

In summary, while the NHS advises people who have undergone CABG surgery to avoid fatty foods like beef, there is no specific recommendation to avoid beef while taking Lipitor. A healthy and balanced diet that includes lean protein, such as beef, in moderation, is recommended for people taking Lipitor [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/conditions/coronary-artery-bypass-graft-cabg/living-with/
[3] https://www.prevention.com/food-nutrition/g20509737/what-to-eat-if-you-take-statins/