I have not seen anything here about varying the times of taking the prescribed dose of Flecainide, just the effect of different amounts.
My PAF has always for 10 years occurred v rarely but principally threatened in late pm and during the night. During this time I have always taken 100mgs around 4am and then another 100mgs around 4pm. This year due to a change in my AF pattern I have been taking my first '4am' dose up to 6 hours earlier ie 10pm and found it helps prevent nighttime AF (which is now occurring much more often) and improves sleep. I am aware max dose is 300mgs in any 24hrs.
Anybody found varying the times has helped them and secondly are there any risks in taking x2 100mgs within 6/7/8 hours?