I have afib for about 10 years. I can live with the symptoms but keeping my blood thin is a challenge. I'm taking 325 mg aspirin every day but I'm not sure that's enough. When you get a protime test on that dosage, it doesn't even register as having any blood thinning effect.
I'd like to try nattokinase, but I'm not sure it will work. And I'm afraid to go off the aspirin - only one TIA about 9 years ago.