Lipitor, also known as atorvastatin, is a medication commonly prescribed to lower cholesterol levels and reduce the risk of cardiovascular disease. To determine if Lipitor impacts gut microbiome diversity, we can refer to the provided sources.

According to the first source, DrugPatentWatch, it provides information about the drug Lipitor, including its chemical composition and patent status. However, it does not directly address the impact of Lipitor on gut microbiome diversity.

The second source, a study published in the journal "Gut Microbes" and available on the National Center for Biotechnology Information (NCBI) website, investigates the effect of statins, including Lipitor, on the gut microbiome. The study suggests that statins, including atorvastatin, may have an impact on gut microbiota composition. However, it is important to note that this study was conducted on mice, not humans. Therefore, further research is needed to determine if similar effects occur in humans.

The third source, a study published in the journal "Frontiers in Microbiology" and available on PubMed, explores the effects of atorvastatin on the gut microbiota in patients with hypercholesterolemia. The study found that atorvastatin treatment was associated with changes in the gut microbiota composition, including a decrease in the abundance of certain bacterial species. However, the study also acknowledges that more research is needed to understand the mechanisms underlying these changes and their clinical implications.

In summary, the available sources suggest that Lipitor, or atorvastatin, may have an impact on gut microbiome diversity. However, it is important to note that the studies mentioned were conducted on mice and patients with hypercholesterolemia, so further research is needed to determine if similar effects occur in the general population.

Sources:
[1] DrugPatentWatch: https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Study on the effects of statins on the gut microbiome: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7261966/
[3] Study on the effects of atorvastatin on the gut microbiota: https://pubmed.ncbi.nlm.nih.gov/29330433/