Based on the available information from reputable sources, there are no direct or common avocado side effects associated with taking Lipitor (atorvastatin), a medication used to treat high cholesterol levels. Avocado is a fruit rich in healthy fats and nutrients, and its consumption is generally considered safe and beneficial for most individuals. Lipitor, as a statin drug, works by reducing the production of cholesterol in the body.

However, it is essential to note that individual responses to medications and foods may vary. While avocado itself does not have any known side effects when combined with Lipitor, it is always advisable to consult with a healthcare professional, such as a pharmacist or a doctor, regarding any concerns or questions about potential interactions between medications and foods, including avocado.

In summary, there are no reported common avocado side effects associated with Lipitor (atorvastatin) based on the available information. However, it is always best to consult with a healthcare professional for personalized advice.

Sources:
[1] <https://www.drugpatentwatch.com/p/tradename/LIPITOR>
[2] <https://www.rxlist.com/lipitor-drug.htm>
[3] <https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details>