Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body. According to the sources provided, there is no direct evidence that suggests that Lipitor increases the risk of bleeding when used with blood thinners. However, it is essential to consult with a healthcare professional before taking any medication, especially if you are taking blood thinners or any other medication.

It is important to note that herbal supplements can interact with medications, including blood thinners, and increase the risk of bleeding. The Mayo Clinic [2] recommends that individuals who are taking blood thinners should avoid herbal supplements or consult with a healthcare professional before taking them.

According to SingleCare [3], Lipitor is not a blood thinner, but it can interact with blood thinners. Lipitor can increase the effect of blood thinners, leading to an increased risk of bleeding. Therefore, it is essential to consult with a healthcare professional before taking Lipitor if you are taking blood thinners or any other medication.

In conclusion, there is no direct evidence that suggests that Lipitor increases the risk of bleeding when used with blood thinners. However, it is crucial to consult with a healthcare professional before taking Lipitor or any other medication, especially if you are taking blood thinners or any other medication. Additionally, herbal supplements can interact with medications, including blood thinners, and increase the risk of bleeding. Therefore, it is essential to avoid herbal supplements or consult with a healthcare professional before taking them if you are taking blood thinners.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/healthy-lifestyle/consumer-health/in-depth/herbal-supplements/art-20046488
[3] https://www.singlecare.com/blog/is-atorvastatin-a-blood-thinner/