You are correct that all of these supplements can thin the blood, so if you’re worried ask your doctor to check your pt/ptt. It’s a blood test that tests how thin your blood is (they usually order it before surgery). I recently added a lot of supplements to my diet, including flax seed and flax seed oil, which are known to thin the blood, and my pt/ptt came back normal. I’m just making sure to spread them out throughout the day, so I’m not taking too many supplements at once.