Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood. Blood thinners, also known as anticoagulants, are medications used to prevent blood clots. According to the sources provided, there are some risks associated with taking Lipitor and blood thinners together.

One potential risk is an increased risk of bleeding. Blood thinners work by slowing down the body's ability to form blood clots, which can increase the risk of bleeding. Lipitor can also increase the risk of bleeding, particularly if taken in high doses [3]. Therefore, taking Lipitor and blood thinners together may increase the risk of bleeding even further.

Another potential risk is drug interactions. Lipitor can interact with certain blood thinners, such as warfarin, which can increase the risk of bleeding [1]. Patients taking both medications should be closely monitored by their healthcare provider to ensure that their blood clotting levels are within a safe range.

In addition, certain foods can interact with both Lipitor and blood thinners. For example, grapefruit and grapefruit juice can increase the levels of Lipitor in the blood, which can increase the risk of side effects [2]. Similarly, foods high in vitamin K, such as leafy greens, can interact with blood thinners and make them less effective [2].

In conclusion, taking Lipitor and blood thinners together can increase the risk of bleeding and may require close monitoring by a healthcare provider. Patients should also be aware of potential food interactions and should talk to their doctor or pharmacist if they have any concerns.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.guthrie.org/blog/dont-eat-these-foods-if-you-take-blood-thinners-or-statins
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013