I have been advised I have extremely low hemoglobin and have been prescribed iron tablets. Prior to this I was diagnosed with AF in 2010 and had cardio version in 2012. Since then my AF has been extremely well managed by taking, flecanide, bisoprolol, ramipril and warfarin. I have led a normal life. But over last few weeks AF symptoms are back!! So was wondering if this is due to low hemoglobin.