I am taking 50 mg flecenaide twice per day, and I have never had an attack since starting this medication. My excellent cardiologist suggested that I combine this rhythm control medication with rate control, even though my heart rate is currently low, averaging between 50-60. His reason is that if you do go into fibrillation while you are on flecenaide, you can sometimes get an extreme rapid pulse that is possibly dangerous. Has anyone had this experience, or heard this advice? I am reluctant to take daily beta blockers because it makes me feel lethargic, and digoxin makes me feel like I'm having a heart attack. I feel great on flecenaide alone and thus far have declined additional medication. Any thoughts?