Lipitor is a medication used to lower cholesterol levels and reduce the risk of heart disease and stroke [1]. Aspirin, on the other hand, is a medication used to reduce pain, fever, and inflammation, and also to prevent blood clots [3]. According to the sources provided, there is no clear indication that Lipitor increases the risk of bleeding when taken with aspirin.

However, it is important to note that both Lipitor and aspirin can have side effects and interact with other medications or supplements. For example, the use of herbal supplements, such as ginkgo, garlic, and ginger, can increase the risk of bleeding when taken with aspirin [2]. It is important to consult with a healthcare provider before taking any new medications or supplements, especially if you are already taking aspirin or Lipitor.

In summary, based on the sources provided, there is no clear evidence that Lipitor increases the risk of bleeding when taken with aspirin. However, it is important to be aware of potential interactions and side effects of both medications, as well as any supplements or other medications you may be taking.

Sources:
[1] Drug Patent Watch. Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Mayo Clinic. Herbal supplements: What to know before you buy. Retrieved from https://www.mayoclinic.org/healthy-lifestyle/consumer-health/in-depth/herbal-supplements/art-20046488
[3] HealthCentral. Aspirin and Lipitor: A Good Time? Retrieved from https://www.healthcentral.com/article/aspirin-lipitor-time.