Lipitor is a cholesterol-lowering drug that is commonly prescribed to patients with high cholesterol levels. It works by inhibiting the production of cholesterol in the liver [1]. Red meat, on the other hand, is a rich source of protein and iron but is also known to contain high levels of saturated fat, which can increase cholesterol levels [3].

According to the sources provided, there is no direct evidence that combining Lipitor and red meat can cause side effects. However, it is important to note that consuming red meat while taking Lipitor can reduce the effectiveness of the drug. A study published in the Journal of the American College of Cardiology found that a diet high in saturated fat, such as that found in red meat, can reduce the effectiveness of Lipitor in reducing cholesterol levels [3].

It is recommended that patients taking Lipitor follow a low-fat diet that includes plenty of fruits, vegetables, and whole grains. They should limit their intake of red meat, as well as other high-fat foods such as butter, cheese, and fried foods [2].

In conclusion, while there is no direct evidence of side effects from combining Lipitor and red meat, it is important for patients taking Lipitor to follow a low-fat diet to ensure the drug's effectiveness in reducing cholesterol levels. Patients should limit their intake of red meat and other high-fat foods to achieve the best results from Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://my.clevelandclinic.org/health/drugs/8744-cholesterol-lowering-drugs
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6791134/