atrial fibrillation
"Benign artrial fibrillation.  Cardiologist tried everything -- next step was surgery.  Was having from 10-15 six hour episodes per month and ruining quality of life.   Have been on flecainide for 2 years and it is now completely under control.  Only episodes I've had were a year ago during a bronchitis episode but as soon as antibiotics kicked in the a-fib was gone again.  Absolutely no side effects and this medicine has changed my life."