Nattokinase's Role in Effectively Treating High Cholesterol

I have had stent surgeries but they keep blocking requiring more surgeries. For years I have been on Nattokinase, niacinamide and ubiquinol plus K2. Your article indicates your great lab results also using grape seed. I have not been taking the larger doses so realize this is my problem. My concern is taking K2 while on a dose of Plavix and 81 mg aspirin. Does the K2 as a coagulant create additional blockage?