Lipitor is a medication that is used to lower cholesterol levels in the body. According to Drug Patent Watch [1], Lipitor's active ingredient is atorvastatin, which works by blocking the production of cholesterol in the liver. While taking Lipitor, it is important to follow a low-cholesterol diet to maximize its effectiveness.

When it comes to lean beef consumption while taking Lipitor, it is recommended to limit intake. Prevention [2] suggests that it is best to limit red meat intake to no more than three times a week and to choose lean cuts of beef. It is also important to trim any visible fat from the meat before cooking.

Verywell Health [3] recommends some low-cholesterol food swaps for meat, suggesting that individuals who are taking Lipitor should opt for leaner cuts of beef such as sirloin, tenderloin, and flank steak. They also recommend consuming poultry and fish as alternatives to beef.

In summary, while taking Lipitor, it is recommended to limit red meat intake and choose lean cuts of beef. It is important to trim any visible fat from the meat before cooking. It is also recommended to consume poultry and fish as alternatives to beef.

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