Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood [1]. According to the drug label provided by the FDA, Lipitor is indicated for the treatment of high levels of low-density lipoprotein (LDL) cholesterol, which is commonly referred to as "bad" cholesterol [2].

However, a vegan diet can naturally help to lower cholesterol levels, as stated by The Vegan Society [3]. This is because a vegan diet is typically low in saturated fats, which can raise LDL cholesterol levels. Instead, a vegan diet is rich in plant-based foods such as fruits, vegetables, whole grains, and legumes, which are high in fiber and other nutrients that can help to lower cholesterol levels.

Therefore, whether or not Lipitor is necessary for vegans depends on their individual cholesterol levels. If a vegan has high levels of LDL cholesterol, despite following a plant-based diet, their healthcare provider may recommend Lipitor or another cholesterol-lowering medication. However, if their cholesterol levels are within a healthy range, they may not need to take Lipitor or any other medication.

In conclusion, while Lipitor can be an effective medication for lowering cholesterol levels, its necessity for vegans depends on their individual cholesterol levels. A vegan diet can naturally help to lower cholesterol levels, but some vegans may still require medication to achieve healthy cholesterol levels.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/020702s057lbl.pdf
[3] https://www.vegansociety.com/news/blog/let%E2%80%99s-talk-about-cholesterol-and-vegan-diets