Lipitor is a medication used to lower cholesterol levels in the body [1]. When it comes to dietary restrictions while taking Lipitor, it is recommended to avoid foods high in saturated fats, as they can increase cholesterol levels. Lean beef, on the other hand, is a good source of protein and iron but is also known to contain saturated fat [2]. It is recommended to limit the consumption of beef while on Lipitor and opt for leaner cuts of meat such as chicken, turkey, or fish [3]. Additionally, incorporating more plant-based protein sources such as legumes, nuts, and seeds can be beneficial in maintaining a healthy diet while taking Lipitor. It is important to consult with a healthcare professional or a registered dietitian to create a personalized diet plan that suits individual needs and health conditions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.verywellhealth.com/low-cholesterol-food-swaps-meat-and-cholesterol-697807
[3] https://www.prevention.com/food-nutrition/g20509737/what-to-eat-if-you-take-statins/