After reviewing the sources provided, there is no evidence to suggest that avocado increases the effectiveness of Lipitor. Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood [1]. It works by inhibiting the enzyme HMG-CoA reductase, which is responsible for producing cholesterol in the liver [2].

Avocado, on the other hand, is a fruit that is rich in healthy fats, fiber, and various vitamins and minerals [3]. While there is some evidence to suggest that consuming avocado may have a positive effect on cholesterol levels, this is likely due to its high fiber content and not because it interacts with Lipitor [4].

In fact, one study found that consuming avocado alongside atorvastatin did not result in any significant changes in cholesterol levels compared to taking atorvastatin alone [5]. Therefore, it is unlikely that avocado has any impact on the effectiveness of Lipitor.

In conclusion, based on the sources provided, there is no evidence to suggest that avocado increases the effectiveness of Lipitor. While consuming avocado may have some health benefits, it is important to follow the advice of your healthcare provider when taking medications such as Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7023362/
[3] https://onlinelibrary.wiley.com/doi/10.1002/ptr.6619
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664913/
[5] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3545982/