Yes, Vascepa does thin your blood, and people receiving Vascepa are at a slightly increased risk of bleeding with one trial showing 12% of people receiving Vascepa experienced a bleeding event compared with 10% of people receiving a placebo (an inactive pill). The risk of bleeding is higher in people who also take other medications or supplements that increase bleeding risk such as aspirin, clopidogrel, dabigatran, warfarin, NSAIDs, feverfew, ginkgo, garlic, or ginseng.