I have just come off flecainide after being on 100mg twice a day for almost six years. For a week I took 50mg morning and evening but have been off it completely for a about 10 days. My heart appears to be in rhythm but I am so tired. This morning I woke up at about 7am, the next thing I knew it was gone 10. I didn't do anything yesterday to make me so tired. the arrhythmia nurse said there may be a few blips but I wasn't expecting excessive tiredness to be one of them. has anyone else had this?