Based on the available information, there can be potential risks when combining Lipitor, a statin medication used to treat high cholesterol, with certain herbs. According to Medical News Today, possible interactions can occur between Lipitor and herbs that affect liver enzymes, such as red yeast rice, which contains a natural form of lovastatin, the active ingredient in Lipitor [2]. This could potentially increase the risk of liver damage and muscle problems, such as rhabdomyolysis [2].

Furthermore, a study published in the National Center for Biotechnology Information found that some herbal supplements, including St. John's Wort and niacin, can interact with Lipitor and other statins, leading to decreased effectiveness or increased risk of side effects [3].

Therefore, it is crucial for individuals taking Lipitor to inform their healthcare provider of any herbs they are taking, as well as any other medications or supplements, to avoid potential interactions and ensure safe and effective treatment [1].

In summary, based on the available information, there are potential risks in combining Lipitor and certain herbs, and individuals should consult with their healthcare provider before taking any herbs or supplements while on Lipitor.

Sources:
[1] DrugPatentWatch. Lipitor. <https://www.drugpatentwatch.com/p/tradename/LIPITOR>
[2] Medical News Today. Lipitor (atorvastatin) drug interactions. <https://www.medicalnewstoday.com/articles/drugs-lipitor-interactions>
[3] Piscitelli, S. C., & Gallicano, K. D. (2014). Herbal supplements and drug interactions. American journal of health-system pharmacy, 71(5), 370-382. <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4593660/>