Lipitor is a brand name for the drug atorvastatin, which is a type of statin used to lower cholesterol levels in the body [1]. According to a report by ABC News, statins like Lipitor can help lower the risk of heart attack and stroke by reducing the amount of cholesterol produced by the liver [2]. However, the article from Prevention states that while taking statins, it is important to maintain a healthy diet to maximize their effectiveness [3].

Regarding the question of whether beef can still be consumed while taking Lipitor, it is important to note that red meat, including beef, is high in saturated fat, which can raise cholesterol levels in the body [3]. Therefore, it is recommended to limit the consumption of red meat while taking Lipitor.

In conclusion, while taking Lipitor, it is important to maintain a healthy diet and limit the consumption of red meat, including beef, to maximize the effectiveness of the medication in lowering cholesterol levels in the body.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://abcnews.go.com/Health/cholesterol-lowers-due-statins/story?id=12934422
[3] https://www.prevention.com/food-nutrition/g20509737/what-to-eat-if-you-take-statins/