Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood. It is not a blood thinner, as stated by SingleCare [3]. Blood thinners, also known as anticoagulants, are medications that help prevent blood clots from forming or getting bigger [2]. According to Drug Patent Watch, there are no known interactions between Lipitor and blood thinners [1]. However, it is always important to consult with a healthcare provider before taking any new medication, especially if you are already taking a blood thinner. They can evaluate your specific situation and determine if Lipitor is safe for you to take with your current blood thinner medication. It is also important to note that Lipitor can have potential side effects, such as muscle pain and liver damage, so it is important to follow your healthcare provider's instructions and report any unusual symptoms while taking the medication [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.healthline.com/health/blood-thinner
[3] https://www.singlecare.com/blog/is-atorvastatin-a-blood-thinner/