I've been going over some old posts about fatigue & have come to the conclusion that my extreme sleepiness is related to medication. I say this because the other major cause seems to be arrhythmia, and my last remote report showed 0% afib & no unusual incidents at all. When I say extreme sleepiness I mean I can get out of bed at 9 & be ready for a 2-hour nap by 11, then go through the rest of the day craving even more sleep! I found out that metoprolol (I take 50mg x 2) and other beta blockers have the nickname "slug drug", and boy, did that hit home! It was suggested that a lower dose might be helpful, but I was taking half the amount & still having some afib. Now I'm wondering if it was better to put up with occasional arrhythmia & not be so tired? Some folks said taking their beta blocker at night helped a bit, but mine is taken twice a day--could I take the full amont all at once in the evening? I have a dr visit coming in March, but I'm interested in hearing others' experiences with the slug drug :) Of course, I would never make medication changes without checking with my doctor!