Lipitor is a medication used to lower cholesterol levels in the blood, while avocado is a fruit that is high in healthy fats and other nutrients. There is no evidence to suggest that combining lipitor and avocado poses any risks. In fact, consuming avocado as part of a healthy diet may help to lower cholesterol levels and reduce the risk of heart disease, which is the primary reason why lipitor is prescribed.

According to a study published in the Journal of the American Heart Association [2], a diet that includes avocado may help to lower LDL cholesterol levels, which is the "bad" cholesterol that can build up in the arteries and increase the risk of heart disease. The study found that participants who consumed a diet high in monounsaturated fatty acids (like those found in avocado) had lower LDL cholesterol levels than those who consumed a diet high in carbohydrates.

Another study published in the Journal of Nutrition [3] found that adding avocado to a diet that was already low in saturated fat and cholesterol resulted in a greater reduction in LDL cholesterol levels than a diet that was low in saturated fat and cholesterol but did not include avocado.

While there is no evidence to suggest that combining lipitor and avocado is harmful, it is always important to speak with a healthcare provider before making any changes to your diet or medication regimen. Your healthcare provider can help you determine the best course of action based on your individual health needs.

Sources:
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4330060/
[3] https://academic.oup.com/jn/article/145/2/313/4616747