atrial fibrillation
"I started on Flecainide in 2009.  Started with 50mg twice a day. Atrial fibrillation episodes continued but when I stepped it up to 100mg twice a day, episodes kept at bay.  Only problem is when I forgot a dose, then episodes happen and real bad rhythms to boot.  Got to be on time each day with dosage, or else not protected.  No side effects at all!"