According to the sources provided, there is no known interaction between Lipitor (atorvastatin) and avocado. Lipitor is a medication used to lower cholesterol levels in the blood, while avocado is a nutritious fruit that is rich in healthy fats, fiber, and vitamins.

However, it is important to note that certain foods can affect the way medications work in the body. For example, grapefruit and grapefruit juice can interact with Lipitor and increase the risk of side effects such as muscle pain and liver damage [2]. Therefore, it is always a good idea to talk to your doctor or pharmacist about any potential food or drug interactions before starting a new medication or changing your diet.

In summary, based on the sources provided, there is no evidence to suggest that avocado interacts with Lipitor. However, it is important to be aware of potential food and drug interactions and to consult with a healthcare professional if you have any concerns.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.statnews.com/2016/11/03/medications-food-drug-interactions/
[3] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details/list-interaction-food