My cardiologist recently changed my beta blocker to bisoprolol, for atrial flutter. It has reduced the frequency of session (good), but when they do come, they are much worse. The symptoms during a session are stronger (weak, dizzy, can't concentrate, breathless), and afterwards it feels like I've been hit by a bus, totally exhausted for hours, achy, often a headache. Bad sessions like this were quite rare on my old beta blocker (atenolol).
I was just wondering if anyone else has had the same thing, or whether the bisoprolol is just letting the worse ones through (so to speak), and managing to block the weaker session?
Thanks in advance.