But more important, with AFib you need to guard against the formation of blood clots. A simple aspirin a day (or
1/
2 or a low dose) with a meal (I take my
1/
2 aspirin with breakfast every morning). If you have other clot risk factors (you didn't give me any, you age is on the margin of being a risk factor) you may need a prescription for an anticoagulant.
I have been in and out of AFib for years, and was a runner until April of 2007 when I could not be converted back to NSR.