Lipitor is a brand name for atorvastatin, which is a type of statin drug used to lower cholesterol levels in the blood [1]. According to Prevention, it is generally safe to eat avocados while taking statins like Lipitor, as avocados are rich in heart-healthy monounsaturated fats and fiber, which can help lower cholesterol levels [2]. However, it is important to note that individuals taking statins should avoid consuming grapefruit or grapefruit juice, as it can interfere with the liver's ability to metabolize the drug, leading to potentially dangerous side effects [3].

In conclusion, based on the provided sources, it appears that eating avocado is safe for individuals taking Lipitor. However, it is important to avoid consuming grapefruit or grapefruit juice while taking this medication. As always, it is recommended to consult with a healthcare provider or registered dietitian for personalized advice on dietary choices while taking medication.

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.guthrie.org/blog/dont-eat-these-foods-if-you-take-blood-thinners-or-statins