I just had an ablation Mon. I was prescribed the drug you mentioned. Because though my sinus rhythm became normal for the fist time after living in A Fib for over 5 years. My cardiologist said the heart often wants and can flip back into A Fib. He did change metrpolol to a sustained release taken at night that should make me less exhausted. Fingers crossed.
Have you had an ablation? I gained 8 lbs in a day. They kept me overnight because my bladder would not wake up. Finally by thr next am it started to work. My diastolic BP is 50. That is too low. 02 dips below 87 and heart rate is 62. That is new to me.
I will let you know what the new med Flec inide sp? Does. Hope you feel better.